Wrong passcode three times is the criteria that has to be met for you to get a picture of the person that stole your tablet.
There is an option to wipe data after too many unsuccessful attempts when setting up your passcode. After 10 unsuccessful passcode attempts, your phone will wipe all the data if this option is enabled. Once this data is deleted, it cannot be recovered. If, however, you have been backing up your phone with iCloud, you can do so by using the most recent backup data.
If iTunes doesn't open automatically once you plug in your iPhone, go to the sidebar, right-click your iPhone, and choose "Backup." After the backup data is finished, select "Restore." If your computer sends you a notice informing you that you must enter your passcode before you can access your phone, try restarting it by removing the USB from the phone (but not the computer), turning off your iPhone, and then pressing and holding the Home button while you plug it back in.
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