You can see the complex.
Consist of two android devices.
Device-H and Device-D
I take the complex into hands and type a message by an virtual keyboard and press the button “Send”.
Message has been sent to the Device-H. Now a hearing person knows what I want from him (or her).
To continue the dialogue I disunite the complex and hand the Device-H to the hearing person.
Now the hearing person typing messages on a virtual keyboard or using voice input.
The hearing person answered me.
The exchange of messages is possible in any language supported by your Android-devices. Such complex can be used in any country. All messages between the devices free of charge.
download applications for device-D and Device-H from Google Play
If you have any questions, please ask in comments.
