hi,
I've been looking into incorporating free WiFi access into my feature business and found myself in delma of how I can control the access.

the free WiFi only for people that make a purchase.

first, I thought of printing some kind of randum number (wireless code) on the sales reciept then storing this number in a database and when someone tries to go online they will be prompted with the ' Wireless Code' and my router will verify the number against the database. this sounds very nice but complicated specially that I will have basic register and limited budget.

Second, I thought to protect my WiFi network with password and customers have to come to me to get the password. this may be a problem if we're so busy and hard to control .

any ideas how I can control the access ?
thanks