Consider creating a solution that allows a secret location to be recovered.

[micheal-swiggs]

Maybe the user's secret location is stored on the server for roughly 1-3 months. The user can obtain the location if they forget it.

[micheal-swiggs]

Maybe encrypt the point, send to user's email. Upload key to a jumblar server. When user forgets, request key using id attached to encrypted location. The id-attached should be very 'large'. As anyone will be able to request the private key. So an attacker could attempt to catalog stored keys by iterating through ids. This is unlikely to work as it will be difficult to find a valid id if the ids are large.