Germany - The branded 'Einmal' (Deutsch for 'once') discs employ a chemical coating that starts breaking the disc down once the vacuum seal is breached. On average, users get 48 hours of use from a €3.99 ($6.44) disc. Once the disc has run its course, it'll show up as non-readable when popped into a player (no explosion). (more)Proposition Impossible, unless a good security application comes along.
