Bitcoin portable device?

[Coma]

Are there any projects to develop a device or mobile app to transfer bitcoins?
I guess the mobile app approach would be far more efficient, but I mean to be able to buy at physical stores. RFID cardsa or something. I don't know how that would even be possible, but something like this is obviously necessary if we pretend Bitcoin to spread.

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[TraderTimm]

I personally would love it if the 'Square' guys integrated bitcoin into their payment network. This unlikely however, due to their participation with the major credit card issuers. Heck, can anyone think of a system with reader/app that would work on a bitbill/smartcard kind of system?

For reference: https://squareup.com/

[Littleshop]

$999 macbook air 11?

I know there are cheaper ways.  But that thing is pretty small!

[Drifter]

Near field communications and online BC banks/wallets will make this simple. In due time something like Google Wallet could work, but instead of having to use a credit card to pay, you can put real money into your Google wallet and pay from the stored credit. Tap a phone on the payment device, confirm the transaction and you're done. If retailers can be convinced that they can get the perks of mobile payment and NFC without having to pay the merchant fees associated with credit cards, it'll be a strong arguing point.

NFC is years away from being prominent though, and is only beginning to be tested. For now, online wallets work well enough for mobile payments and I think it'll take a wide range of compatible NFC devices for the best transition into a portable option.