What is the best way in the manner of products to find an aircraft after it crashed out of line of sight. Are there defined standards, and what are the selection criteria?
Any recent Android mobile phone has "find my device" feature now, even if no additional apps are installed.
Attach an Android phone with the dedicated Google account logged into to the AC and you will be able to find the location, say, by visiting Google website from your tablet. You can buy a ruggedized phone that is more likely to survive the crash.