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PrivChat - Newbie Guide

作者 Vivindu on 3月 20, 2013

You can download the complete version of Guide: User Guide for Espier PrivChat (PDF)

Introduction

More and more users begin to pay attention to personal message security. As a popular consumer device, you store a lot of private pictures, videos, messages, and files in your smart phone. However, you may accidentally lose your phone. NSA (National Security Agency) or a cracker may spy your messages. Someone may pose as a friend to defraud your money. Apparently, more and more security problems appear all around us.

Espier PrivChat focuses on your privacy protection. Espier PrivChat in essence is an instant messaging app. This app integrates SMS, MMS, and eMessage (one like Apple’s iMessage). You can use it to send text, emojis, pictures, audios, videos, and anything in your devices to your friends, whether he/she is using Espier PrivChat or not. EVERYTHING CAN BE A MESSAGE!

Espier PrivChat improves the security of your messages by using various means and technologies including Silent Messages, Burn-after-Reading Messages, Secret Messages, OpenPGP Encryption Messages, OTR (Off-the-Record) Encryption Conversations, and Enhanced Password.

Espier PrivChat is cloud-enabled. You can use this app to store your personal messages (such as notes and diaries) and files in the cloud. You can get these content on any Android device installed Espier PrivChat via your Espier ID, wherever and whenever.

Espier PrivChat also is a social app. Since version 3.2.6, you can join chat community anonymously to communicate with other users. Since version 3.4.0, you can create your own anonymous chat community and share your idea and pictures, videos to your friends or strangers all around the world. You can speak secretly and feel free to express your own opinion.

Espier PrivChat is a SUPER app. This app is not only a secure instant message, but also a file manager. You can use this app to encrypt/decrypt your important files and/or browse, delete, or rename your locale files.

Currently, Espier PrivChat runs on Android (version 2.3 or above) devices (including phones and pads). Espier Studio is working hard to develop big updates and the edition for iOS devices. Please stay tuned.

If you encountered any problem when using this app, please read this guide to find the detailed usage instructions and the solutions.


Getting Started

Activate eMessage

In your first run of the app, this app will ask you to activate eMessage. eMessage uses INTERNET to send messages and/or transfer files between you and your friends. Most features of Espier PrivChat depend on eMessage. To use eMessage, you need to have an Espier ID.

The app will provide you a guide to active eMessage. If you have used other Espier apps, such as Espier Launcher and Espier Screen Locker, you may already have your Espier ID registered by visiting Espier Mobile Portal site (https://www.espier.mobi). In this situation, please login with your Espier ID and your password. Please see Figure left.

If you did not register your Espier ID yet, you can also register a new Espier ID by using your email address. Please see Figure right.


Next important steps

Tell friends

You know that you can save your carrier messaging rates by using eMessage to send messages between you and your friends. If you send a message to a friend who do not use this app, the message will be sent as traditional SMS or MMS. Therefore, the first step is to tell your friends about eMessage.

Tap Me -> Settings -> Tell Friends, you will be prompted a page to select your friends and send a short message to them.

Create or import your PGP Keypair

In order to send PGP encryption messages or protect your local files, you need have your own PGP Keypair. You should create a new Keypair or import your existing Keypair to Espier PrivChat. For more information, please refer to the sections “New Keypair” and “My Private Safe Box”.

Moreover, you should share the public key of your Keypair to your friends. Thus, your friends can send PGP encrypted messages or files to you by using your public key. For more information, please refer to the section “Send an OpenPGP encryption message.

Note that if you create a new PGP Keypair, you will be asked to set a new enhance password for the secret key of the new Keypair. The enhanced password uses a code and a pattern to generate the real password and it is bound with your Espier ID. If you changed the Espier ID or the password of the Espier ID is not correct, the same code and pattern will generate a different real password or it will not work. This will protect your privacy when the phone was lost.

Enter secret mode

This app provides various privacy protection means and technologies. One useful mean is called secret mode. After you entered secret mode, you will send secret messages to your friends, check all secret messages, or mark some existing messages as secret messages. In this way, your sensitive/important information in the messages will be protected properly.

  1. Long-tap Messages icon on the main screen. The app will ask you to set an Enhanced Password to access your secret messages (enter the secret mode).
  2. After you set the enhance password to access the secret messages, the Messages icon in the main screen will be shown with a shadow. Please see Figure.

Mark some conversations as My Favorites

You can mark some conversations as your favorites. In this way, some important conversation will be protected from deleting accidently. To do this, please slide one conversation entry in Messages page of the main screen from right to left, and then choose “Mark Favorite”. This conversation will be moved to My Favorites page. Please see Figure.


Send everything as a message

eMessage

eMessage is a service provide by Espier Studio for all Espier users. You can use eMessage to send messages and/or files to your friends via INTERNET. The key features of eMessage are as follow:

  1. eMessage provides not only the unlimited text messaging service for you and your friends, but also the support for transferring files.
  2. eMessage uses INTERNET to send messages and transfer files between devices; it can save your carrier messaging rates.
  3. Hundred of Emojis emoticons can help you to enhance the expression power of your messages.
  4. eMessage supports to transfer large files, pictures, audios, and videos.
  5. The data transfer between devices is encrypted. This will prevent your data from illegal spying.
  6. Support for sending offline files to your friends.
  7. Support for traditional SMS/MMS - unified messaging technology.

If you want to send messages or transfer files via eMessage, please make sure that:

  1. Your device is connected to INTERNET via WIFI, or 2G/3G/4G.
  2. Your Espier ID is correctly logged in.

Send a text message

If you want to send a message, please follow the steps:

  1. In the Messages page of the main screen, tap the pen icon on the top-right corner of the page to create a new conversation.
  2. Enter a contact number, email address, or name, or tap “+” icon on the right side of the address bar to select a contact.
  3. Or you can tap an existing conversation entry in Messages page or My Favorites page to enter the message list page of the conversation.
  4. Enter the content that you want to send, and then tap “Send” button, the text message will be sent successfully, as shown in Figure.

Send a voice message

If you want to send a voice message, please follow the steps:

  1. In the Messages page of the main screen, tap the pen icon on the top-right corner of the page to create a new conversation.
  2. Enter a contact number, email address, or name, or tap “+” icon on the right side of the address bar to select a contact.
  3. Or you can tap an existing conversation entry in Messages page or My Favorites page to enter the message list page of the conversation.
  4. Just hold down the voice icon and speak, release the key when you’re done recording. Then the voice message will be sent immediately, as shown in Figure.

Send a picture message

If you want to send a picture to your friend, please follow the steps:

  1. In the Messages page of the main screen, tap the pen icon on the top-right corner of the page to create a new conversation.
  2. Enter a contact number, email address, or name, or tap “+” icon on the right side of the address bar to select a contact.
  3. Or you can tap an existing conversation entry in Messages page or My Favorites page to enter the message list page of the conversation.
  4. Tap the “Camera” icon on the left of the message box, then you can chose “Take Photo/Choose Existing Photo”, if you want to choose an existing photo, then tap “Share” icon. You will see the photo in the message box. Tap “Send” button, then the picture will be sent immediately, as shown in Figure.

Send any file

If you want to send a file with eMessage, please follow the steps:

  1. In the Messages page of the main screen, tap the pen icon on the top-right corner of the page to create a new conversation.
  2. Enter a contact number, email address, or name, or tap “+” icon on the right side of the address bar to select a contact.
  3. Or you can tap an existing conversation entry in Messages page or My Favorites page to enter the message list page of the conversation.
  4. Tap the “Camera” icon on the left of the message box, and then choose “Send Any File”. Find the file which you want to send and select it, then tap “Share” icon. You will see the file in the message box, tap “Send” button, the file will be sent immediately, as shown in Figure.

 


Private Message

Silent Message

The silent message will not generate notification when it reaches the recipient. To send a silent message, please tap the conversation title to select the Silent Message type, as shown in Figure.

Burn-after-Reading (BAR) message

If you want to send a Burn-after-Reading message to your friend, you can do this:

  1. In a conversation page, tap "Contact/Phone number" in the message page, then tap "Burn-after-Reading" icon.
  2. Enter the message content or tap “Camera” icon to choose “Take Photo/Take Video/Choose Existing Photo/Choose Existing Video/Send Any File/Share Location”. After you compose your message, tap “Send” button. This message will be sent as a BAR message, as shown in Figure.

Secret Message

The secret message will not generate notification when it reaches the recipient. The secret messages do not display on the normal message list and all secret text messages will be encrypted and then stored in your phone. The sender and the recipient can only access the secret messages when he/she entered the correct access password (long-pressing the Messages icon). The secret message can protect your privacy when you lost your phone or when there are some persons around you.

To send a secret message, tap the title (contact name or phone number) in a conversation page, then select "Secret" icon. You will need to enter the enhanced password if you are currently not in the secret mode.

Specify some contacts as secret messages senders

You can specify some contacts as secret messages sender when you in the secret mode.

  1. Long-tap the Messages icon, enter the correct access password, then you enter the secret mode.
  2. Tap Me -> Settings -> Private Message Settings -> Secret Message to enter the setting page for secret messages. Tap New/Edit button, in the subsequent page, you can select/deselect one or more contacts. After selected, tap “Done”. All the messages sent from these contacts will become secret messages automatically, and you need to access the secret mode to read these messages, as shown in Figure.

OpenPGP Encryption Message

OpenPGP encryption message uses OpenPGP (which is popular in the email system) to encrypt your message bodies/files and protect your privacy. The following are some key points of OpenPGP encryption message:

  1. Enter Me -> My Keyrings page, you can create or import your keypairs.
  2. You can import key from Key Server, File or Clipboard, then you need bind the key with a contact in your contacts list.
  3. Tap "Contact/Phone number" in the message page, then tap "OpenPGP" icon, you can send OpenPGP Encryption message.
  4. Tap Me -> Settings -> Private Message Settings -> OpenPGP Encryption Message, in the subsequent page, you can set the "Password Cache", "File Encryption", and others.
  5. You need to decrypt the message with your secret key when you received an OpenPGP encryption message.
  6. Me -> My Private Safe Box, you can encrypt all files which you don’t want others to see it.
  7. If you want to send OpenPGP Encryption message to your friend, you need to upgrade to full version.
  8. Enter Me -> My Private Safe Box page to browser all files encrypted with your PGP public key.

Send an OpenPGP encryption message

If you want to send OpenPGP message to your friend, please upgrade to full-feature edition or use the Pro edition of this app. You need to have the public key of the contact and bind the public key with the contact, as shown in Figure.

OTR Encryption Conversation

OTR (Off-the-record) encryption conversation uses asymmetric cryptographic algorithm to encrypt your messages. The keys are only valid for one conversion. It can not only protect your privacy but also verify the identity of your buddy. It is the most secure instant messaging mechanism. Note that the messages will be automatically deleted after you abort an OTR conversation.

  1. Please upgrade to full version to use this feature.
  2. You need to enable and login your eMessage account, if you want to send OTR message.
  3. Tap "Contact/Phone number" in the message page, then tap "OTR" icon, you can create an OTR conversation with your friend.
  4. In order to protect your messages, you can choose to authenticate your buddy.
  5. Me -> Settings -> Private Message Settings -> OTR Encryption Conversation, set the "Questions to authenticate your buddy" and the "Conversation Life time".
  6. Me -> Settings -> Private Message Settings -> OTR Encryption Conversation, set the “Conversation Life Time”, which can protect your OTR conversation. Please see Figure.

Espier User Community

If you have any questions, suggestions or you don’t know how to use this application, you can join in Espier User Community to communicate with the developers and other users of Espier PrivChat:

Tap Cloud -> Espier User Community. In the subsequent page, please specify your anonymous personal information, such as nickname, avatar, age, and so on, as shown in Figure.

 


Options

The options of Espier PrivChat are used to set eMessage account, Private message, General Options, Tell Friends, Mobile Portal, and About. In Cloud page, you can see the all eMessage-related options.

eMessage Account and Settings

Enable eMessage, you can send eMessage or transfer files between Android devices which installed Espier PrivChat app. eMessage uses INTERNET to send messages and transfer files between devices; it can save your carrier messaging rates.

1) Enable: The message will be send as eMessage.
2) Disable: All messages will be send as MMS/SMS.

Espier ID

Espier ID is the login account that you use for everything with Espier Studio, including using eMessage Service, buying the licenses for apps and/or services.

  1. Login. If you have created your Espier ID, you can input your Espier ID and the password to confirm it.
  2. Forgot Password. If you forgot your password, please visit Espier Mobile Portal site to reset it.

My Number

After specifying your phone number, your friends can send messages or transfer files via eMessage by using your phone number.

Send Read Receipts

Allow the senders to be notified when you have read their messages after you enable this option. Note that the read receipts only work for eMessage.

Send as SMS

Enable this option to send a text message as SMS automatically when eMessage is unavailable. Carrier messaging rates may apply.

Receive Online Files

You can choose “Receive Online Files” when your friends send files to you:

1) Always. You will receive the file transferred to you automatically when your friend sends a file to you.
2) Never. You will not receive the files transferred to you automatically. The file will be uploaded to Espier eCloud, and then we will provide a URL to download it when you tap the message.
3) Only in WI-FI. You will receive the files transferred to you automatically when you use WI-FI, but if you use 2G/3G/4G, the file will be sent to Espier Service, you need tap the URL message to download it.

Auto Sending Offline Files

If you can not transfer a file to your friend, because the recipient is offline or does not want to receive the file, this app will upload the file to Espier eCloud.

Auto Send offline Voice Message

If you can not transfer a voice message to your friend, because the recipient is offline or does not want to receive the voice message, this app will upload the voice file to Espier eCloud.

Settings

Tap Me ->Settings. In the subsequent page, you will other settings for this app.

Private Message Settings

Keep your messages secretly to protect your privacy.

eMessage Only

Only use eMessage to send private messages (OpenPGP and OTR Encryption Messages can only be sent via eMessage).

Silent Message

The silent message will not generate notification when it reaches the recipient. You can also specify contacts as silent messages senders.

  1. Not in My Contacts: No notifications for all messages if the sender is not in your contacts.
  2. New/Edit: You can specify some contacts as silent messages senders.

Burn-after-Reading Message

After the recipient read the BAR message, it will be deleted automatically in 5 seconds. Curently, there is no any option for BAR message.

Secret Message

The secret messages will not generate notification when it reaches the recipient. The secret messages do not display on the normal message list and all secret text messages will be encrypted and then stored in your phone. The sender and the recipient can only access the secret messages when he/she entered the correct access password (long-pressing the Messages icon). The secret message can protect your privacy when you lost your phone or when there are some persons around you.

  1. Password: You can set or change the password, it is used to enter Secret Mode, and see all Secret messages.
  2. Password cache: You can read the secret messages without having to re-enter the password in the password cache time.
  3. New/Edit: You can specify messages which come from some contacts are Secret messages.

OTR Encryption Conversation

OTR (Off-the-record) encryption conversation uses asymmetric cryptographic algorithm to encrypt your messages. The keys are only valid for one conversation. It can not only protect your privacy but also verify the identity of your buddy. It is the most secure instant messaging mechanism. Note that the messages will be automatically deleted after you abort an OTR conversation.

  1. Question: These questions are used to authenticate your buddy, you can modify the existing/add new questions.
  2. Conversation Life Time: Set the life time of OTR Conversation, the conversation will be aborted when the life time is over.

OpenPGP Encryption Message

OpenPGP encryption message uses OpenPGP (which is popular in the email system) to encrypt your message bodies/files and protect your privacy.

  1. Delete original file after encrypted: the original file will be deleted when you encrypted it.
  2. My Keyrings: You can go to the Keyrings Page, Create your Keypair or import the public key of your friends.
  3. Password cache: You can decrypt OpenPGP message without having to re-enter the Passphrase in the password cache time.
  4. Keep decrypted file for: The decrypted file will be deleted after the time you set.
  5. Default Keyserver: You can change the default Keyserver.

Enhanced Password Generator

This option provide a way to show you the real password of your enhance password. When you want to use the password apart from this app, you may need this option to see the real password.

General Options

Show Subject Filed

You can enable or disable it. When you enable this option, you can enter the subject of this message, and then the message will be send as MMS. (NOT available for eMessage)

Character Count

You can enable or disable it. When you enable it, the character count in the current message will be shown on the top-right corner of the message composing box.

Show Details in Notification

The content of message will be shown in the notification when you receive it. Otherwise, the content of message will not be shown.

Vibrate

Vibrate alert when you receive a message, if you enable it.

Silent

You will not be notified when you receive a message, if you enable it.

Sound

You can select a notification sound, which you like.

Delivered Sound

You can select a customized delivered sound when you enable this option.

Prompt Recipient for Emoji

The devices or message apps which do not support Emoji can not show Emoji correctly; Enable this option to prompt the recipient when your SMS contains Emoji.

Change Emoji Package

If you want to use the Emoji in iOS-style, please see the following instructions:

  1. Click on this link to download and install Espier Emoji – Apple:
  2. http://files.espier.mobi/apks/org.espier.messages.emoji.apple-1.0.0-google.apk
  3. When you installed this Emoji app, please tap Me -> Settings -> General Options -> Emoji Management, and then select Apple.