Your voice is your stamp.
Voice Stamp—one feature of the Smart Blue Box—replaces the paper stamp with voice authentication, so you can drop mail into a collection box without affixing a paper stamp. More importantly, Voice Stamp uses the existing postal system. That is, the postal sorting facilities already scan every letter for origin and destination. The innovation then simply links the information on your letter or package to your account, charging via the cloud to the credit card on file for your account. In the age of voice recognition, the Voice Stamp is the next big step forward for mail.