What just turns up to games acting like a spectator and rips people off? What a low life!
I have been promoting PayPal as am alternative to money at our club. Set up a club email that the treasurer has. Then most people can pay via their phone. We keep valuables in the club safe during games. Anything left in your kit bag is your own fault as there are several secure options.
I looked into doing that, but Paypal wants to take a massive cut of all transactions and with a small club like ours we couldn't really afford it.
Don't do it officially, just set up a hotmail account and get everyone to gift it. Works ok for us so far.