I always tip my cab drivers and the fact that I was forced to tip when using my debit card was insanely wrong. I went to slide my debit card and it wouldn't go through and I told the driver it wasn't workimg. He said " you have to leave a tip" so he pressed the 20 percent and pressed "next" then the verifone lit up to slide my debit card. No one should be forced to leave a tip especially when you're already being charged an extra 3 bucks to use your card. What a scam in my opinion. Where's uber?