If you want me to connect to your server, don't send me your login informations for Telnet, FTP, or some other dinosaur protocol. Use SSH instead and add my public key to your ~/.ssh/authorized_keys file.

My SSH fingerprint is:
9d:53:fb:e7:aa:a5:02:48:56:14:ee:b2:75:84:70:7e

I use SSL for encrypting my mails. Use the public key to send me encrypted mails.

My S/MIME SHA1 fingerprint is:
28:03:BC:2C:22:35:EE:18:C8:49:C1:D4:8C:E8:04:88:E9:E0:21:A6

I use SSL for encrypting my mails and some web services. All my personal SSL certificates are generated using my own certificate authority. Use the public certificate in order to verify my certificate authority.

My CA's SHA1 fingerprint is:
F1:2C:48:62:B7:76:F6:EA:11:89:6E:2A:86:CE:1A:D7:4E:76:31:09

Please use PGP in order to encrypt your personal mails for me.

My fingerprint is:
6BB8 0F3F 373D 11A1 FD46 53A4 AAFF 8FFA 1758 846B