Idiot proof/Unbreakable – Useless terms
‘Unbreakable’ encryption unveiled. Quantum cryptography is inherently unbreakable.
Perfect secrecy has come a step closer with the launch of the world’s first computer network protected by unbreakable quantum encryption at a scientific conference in Vienna says http://news.bbc.co.uk/1/hi/sci/tech/7661311.stm. Yeah right!
Heard it before? There are a few companies whose bank balances have been nicely reduced by claims such as these.

A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.