Ok, so TechCrunch I think gave a good run down of the differences:
I'll post relevant quotes from:
http://techcrunch.com/2012/04/04/royal-canadian-mints-mintchip-looks-to-officially-digitize-cash/ The Royal Canadian Mint is hoping to create such a system: a multi-platform, simple, and secure alternative to cash. Others around the net have likened it to Bitcoin, but that’s really an inapt comparison. MintChip isn’t a virtual currency, it’s a virtual wallet, something which has been tried before. But, naturally enough, they hope to succeed where others have failed. But are they writing a check they can’t cash?
Briefly, it must be explained why MintChip is nothing like Bitcoin. Bitcoin is a fundamentally different style of currency: a regulated “resource” that uses a totally different method of exchange than cash. It’s very secure in a way, but the aspects that give it that security also make it foreign to existing and familiar payment methods, and by extention, users. Furthermore, its value fluctuates wildly, making it unsuitable for everyday purchases like coffee and cab fare.
MintChip, named after the Mint, the chip enabling the system, and perhaps inadvertently the ice cream flavor, is just a way of securely exchanging Canadian dollars (or at some point, they would hope, other currencies) by means of trusted hardware and straightforward accounting. The actual chip can be fitted into a number of devices, from micro SD cards to POS systems. MintChip value is transferred onto a chip by a MintChip broker, and can then be transferred independently between chips, online or off.
They claim the system is secure and anonymous, though any system that relies on trusted hardware and intermediaries is vulnerable to spoofing and duplication. And anonymity is not an easy promise either: as long as amounts and transfers are tied to account numbers, and account numbers are tied to identities and cards used to purchase funds, anonymity is far from assured. It’s not clear from the spec when and how long account and transaction information is stored.
The reliance on trusted, independent hardware seems like the weak link here, and all it will take is a few hackers (on their own or backed by bank and credit interests) to make public a tool that fools either brokers or merchants into thinking a transaction has taken place. Not a trivial task, but far from impossible. This gives the whole system a bad smell for anyone looking to adopt it. Credit card fraud is rampant, admittedly, but that’s more a function of the system’s widespread use and acceptance. MintChip doesn’t have the advantage of being accepted everywhere.
Thoughts?