Federal investigators fear San Bernardino shooter Syed Rizwan Farook may have used an Apple security feature that erases a key for decrypting data after 10 incorrect guesses of the phone’s password. The ACLU’s technology fellow and former NSA contractor Edward Snowden has suggested a method that would let investigators repeatedly guess the iPhone 5c password. But experts warn it would be difficult to get at the data, known as “chip off” The technique involves removing a NAND flash memory chip from a device and copying its data.”]