Are you pessimistic about ever being able to pay with your smartphone for your groceries or dinner tab? Do you think we’ll be stuck paying with plastic forever?

Don’t despair. Soon there will be the next best thing to carrying no wallet: a plastic wallet just 3/100s of an inch thick called the Spaceless Wallet. The material used in the wallet, Kapton, was designed by DuPont to withstand extreme heat and cold, and is used in spacesuits and circuit boards. Yes, it is orange [see left].

The Spaceless Wallet is optimized for cards, but holds cash, too. The designers are looking for just $3,000 on Kickstarter to get the wallets into production. (Sidekick, which predicts Kickstarter project success with about 76% accuracy, gives Spaceless Wallet a 95% shot at making it.) Maybe the guys from Coin, who rang up more than $50,000 in 40 minutes due to clever marketing and good timing, could help them out! That would be the slimmest wallet out there.

Now please excuse us — we’re off to mine bitcoins.