The app itself is quite careful to wipe private key data from memory as soon as it's no longer being used, however there may be internal memory caches or logs in the camera system or coreImage qr scanning or what not. If you did a factory reset of the device, it's almost certainly not a concern.
So i created an address at bitaddress and wanted to make sure the privkey would work before i sent any larger amounts of bitcoin to it so i scanned it with bread wallet but did not sweep funds. so my question is does that ios device or does the breadwallet app on the device store that somewhere or will it be forgotten about because i didn't sweep the funds ?
i no longer have the device thats why i am asking.
