WiGLE.net

Has anybody been able to go around starbucks login?

if you are talking about the tmobile accesspoints, they are all interconnected to the tmobile network and use a proxy server for authentication, with your "paid" user/password

it is connected to the public internet as you can ping websites and get back their actuall ip addresses, so in theory if you use a public web proxy server that might do it

good luck, and dont actually do it for non-educational reasons becuase its theft of service :p