I'm pretty careful nowadays about carrying the bare minimum of stuff in my wallet, so I've rationalized down to the stuff I really need. But in addition to debi

I'm pretty careful nowadays about carrying the bare minimum of stuff in my wallet, so I've rationalized down to the stuff I really need. But in addition to debit and credit cards, my wallet has a driver's licence, an employee ID card, a couple of health insurance cards, a stored-value smartcard for public transport, and a random "free movie ticket" voucher that I'm gonna get around to using one of these days. Oh, and some cash. Even if I gave up using cash and rolled all my credit cards into my phone, I'm still carrying around a bunch of cards from random bureaucratic organizations which don't have much interest in changing their systems to enable me to avoid carrying around their little card. I'm not sure how a phone-based driver's licence would work (considering that I mostly use my driver's license to as proof of age to get into bars). Besides, my wallet is a convenient place to keep stuff, like that movie ticket I mentioned earlier. Besides, damn near every time I try to buy something the clerk is obliged to try to convince me to acquire one of the loyalty cards for whatever store I'm at. Ohh, little plastic cards aren't going anywhere any time soon. Oh, and my phone battery goes flat often enough as it is. If this left me not only incommunicado but also moneyless, this would be a serious problem.