Lockable Dust Caps?

[Ajax]

Have you ever had one of those days, someone at work resents your electrified ride and decides 'just for a joke' to let the air down and bend the tube vales to prevent you reinflating? Or someone new to the bike shed decides to introduce himself by letting down your tires for sport. Well here's one answer to these opportunist wags.

http://www.amazon.co.uk/Nissan-Twin-tamper-locking-Valve/dp/B007EFIO7U/ref=sr_1_3?ie=UTF8&qid=1410986505&sr=8-3&keywords=dust caps locking

or even

http://www.amazon.co.uk/Richbrook-Spinning-Anti-Theft-Wheel-Valve/dp/B00716GR94/ref=sr_1_4?s=automotive&ie=UTF8&qid=1410986617&sr=1-4&keywords=Richbrook Spinning Car Anti-Theft

These just might save you a late start in the morning, or a later treck home from work.

 

[the_killjoy]

Sounds great until you get a puncture and cannot find the key to undo the valve key.

 

[Gringo]

I think valve tampering is quite rare and never seen as a "joke" if done at all it's malicious.
I've had novelty caps stolen but no one has ever bent my stem,
Should someone want to let your tyres down there just as likely to use drawing pins or a knife so lock on dust caps is no deterrent.