If I were that sort of Dad (and who are we kidding here…I am) the first thoughts that would go full force though my noodle would be hooking this up, one for each kid, such that they would have to pay for intertubes access. Coin goes in, iptables get mucked to add their devices in, set a countdown timer script  based on coins inserted that would take the devices out of the iptables when their time was up…and then sit back and watch as the mayhem commences….and then watch as they learn how to hack iptables, routers and spoof mac address. Seriously, if I were that sort of Dad. ………
PS…this somehow reminds me of the punch line to a very old joke I learned from my Dad…'Here I sit broken hearted, paid a nickle …only farted."Â
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Adafruit Industries, Unique & fun DIY electronics and kits Coin Acceptor – Programmable 1 Coin Type ID: 786 – Your project may be free-as-in-speech, but that doesn’t mean it has to be free-as-in-beer. This handy coin validator/acceptor module is just like the ones you’ve seen in arcades. First, program it with what coin you want it to accept, any coin from 10.8mm to 25.1mm in diameter can be used
