identification

Computer Vision - Recognize 'A' from an image of 'A'

Computer Vision - Recognize 'A' from an image of 'A'
Hi, I'm a novice programmer who's having trouble with simple image processing.My goal here is to make the program recognize that the two A's are... well, both A's. If you look carefully enough, you'll realize that it's a bit different.(on the scale o

Persistent device identifier even after app gets uninstalled

Persistent device identifier even after app gets uninstalled
In my iPhone/iPad app's use case, there is a voting system and one device can send its vote once to the server. Therefore my server needs to identify user's device. I don't want the user to register an account because that makes the app complicate. H