Agreed, but with the target unwilling to contact even his family in 10 years, and being in a completely different country than the one looking for him .. these

Agreed, but with the target unwilling to contact even his family in 10 years, and being in a completely different country than the one looking for him .. these things make the wiretap theory a little watery as well. Your second theory would only work assuming google is participating in blanket facial recognition with various law enforcement.. which while possible, would be a small scandal if revealed.