Hey. I want to make an app, in which when you connect to another device using bluetooth, and you take a photo from that other device, the picture comes into your gallery. Is that possible on MIT. Please respond back. Thank you!
Yes, it can be made using MIT AI2, you can use an extension for that.
The first extension you can use to connect 2 Bluetooth devices, see here :
https://puravidaapps.com/bluetooth.php
https://community.appinventor.mit.edu/t/bt-an-extension-to-work-with-bluetooth/15379
The second extension you need is the extension to convert images to strings :
https://groups.google.com/g/mitappinventortest/c/L6B-8ea9gw4/m/hwNyBxstDQAJ
So you can send images to other devices using images that have been converted to a string and then send them in text using a Bluetooth Extension.
Regards,
Salman Dev
you can use the built in bluetooth client and server components to connect 2 devices, see an example here App Inventor Tutorials and Examples: Bluetooth Chat | Pura Vida Apps
then send the image as text as it already has ben suggested
and to display the image in the gallery you additionally need to refresh the gallery... the tools extension offers a method for that App Inventor Extensions: Tools | Pura Vida Apps
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
How do I use those extensions though. Can you show please show me?
generally see the App Inventor Extensions document about how to use an App Inventor Extension
and concerning a specific extension, just read its documentation
Taifun