The best anti theft device is a baseball bat.

I prefer the all Aluminium 'King More' variety.
Provides excellent protection when correctly installed into the thieves head and you get excellent user feedback.

When applied sparingly to ribs, testicles and the lower legs, fantastic results including immense satisfaction (better than sex with a dirty woman) and genuine long lasting afterglow are to be enjoyed.

Some things are best sorted the old fashioned way.

Otherwise, buy an alarm.
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