3 ms·
The only obvious use I could think of is proof of invention of some idea. Like the old "Mail a letter to your self and don't open it proof".
by niij 10y ago
The only obvious use I could think of is proof of invention of some idea. Like the old "Mail a letter to your self and don't open it proof".
- bobwaycott 10y agoExactly the same as my first thought.