> For similar reasons, USPS is considered secure (there is a high grade federal police service for the postal service, and tampering with mail is a felony). I

> For similar reasons, USPS is considered secure (there is a high grade federal police service for the postal service, and tampering with mail is a felony). I wonder how quickly the cost of the boots-on-the-ground-based security system would pay for a robust electronic infrastructure to replace it.