3 ms·

Pen and paper.

• haroldp 5y ago
  If you send a letter, the USPO automatically takes and stores a picture of the envelope, and will show it to law enforcement upon request - no warrant required. Pen & paper has is a meta-data leak. https://en.wikipedia.org/wiki/Mail_Isolation_Control_and_Tracking https://en.wikipedia.org/wiki/Mail_Isolation_Control_and_Tra...
  • sib 5y ago
    But you can mail letters without return addresses...
    • haroldp 5y ago
      Found the hacker!