Hack-a-day featured an article on how to use this to collect significant amounts of change. They say the hack pays for itself in roughly 3 weeks (one week in highly populated cities).
I swear officer, I thought it was broken.. Pedro just wanted his change back! Pedro didn't mean to molest her, honest! Pedro, NoOooOooo~
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I swear officer, I thought it was broken.. Pedro just wanted his change back! Pedro didn't mean to molest her, honest! Pedro, NoOooOooo~