Stay on Top of Emerging Technology Trends Get updates impacting your industry from our GigaOm Research Community

As the contactless payments technologies from Google Wallet(s goo) to Isis flounder, critics point to what now seems rather obvious: Silicon Valley is trying to fix a system that simply isn’t broken. Swiping a card through a point-of-sale magnetic stripe reader is easy and it works in millions of locations. In fact, the mobile payments companies that have been most successful, such as Square and PayPal(s ebay), aren’t necessarily trying to change that basic transaction – they’ve just made it possible to use your plastic in more places.

Kanishk Parashar learned that lesson the hard way. The PayPal veteran developed a smartphone wallet app in 2010 called Smart Market that went nowhere. But now he’s founded a new company called Coin that isn’t messing around with the fundamentals of the basic credit card swipe. Instead it’s building a better credit card.

The Y Combinator-and K9 Ventures-backed startup has created what amounts a universal credit card that can reprogram its magnetic stripe on the fly to match any card you load into it. It will work not only with credit and debit cards but gift cards, loyalty cards and pretty much any plastic that can swiped, Parashar said.

Coin is the size of a standard credit card, and has an interface that lets you cycle through your stored cards. A small screen displays your name, expiration dates, card security codes and anything else a merchant needs to verify the transaction with the exception of a signature.

The device connects to your iOS or Android smartphone through Bluetooth, but a connection to the phone or to the internet isn’t required to use Coin. Its app is used as a means to load new cards (through an accompanying mag-stripe dongle) and manage the cards already stored in Coin. The device uses 128-bit encryption to secure all data stored and transferred, but it also uses Bluetooth as an additional layer of security. If your Coin loses radio contact with your phone, it will lock up and send you an alert. You can unlock the Coin with a code in case your phone battery dies, Bluetooth conks out or you leave it in the car.

The device has an internal non-replaceable battery that Coin claims will last two years. It’s also designed to take a lot more abuse than your regular credit cards, Parashar said. It’s shock and water resistant, and its strip won’t demagnetize in the presence of magnets, other credit cards or electronics, he said.

Though Coin has seed funding, as a hardware company it still needs to raise funds for manufacturing, Parashar said. It’s launching the product with crowdfunding, hoping to raise $50,000, though it’s not taking to Kickstarter or Indiegogo. Instead it’s taking pre-orders for the device on its website. The first backers will get the device for $50, though it will retail for $100, Parashar said. He expects the first shipments will go to buyers next summer.

I’ll give Parashar credit. Coin’s a novel concept. Unlike other mobile payments companies Coin’s not trying to replace the leather wallet with a digital one. But it’s trying to make that physical wallet a lot less bulky.