<!--## Please edit system and help pages ONLY in the master wiki!--> <!--## For more information, please see MoinMoin:MoinDev/Translation.--> <!--## IMPORTANT NOTE:--> <!--## When you use this page as a template for creating your project page:--> <!--## * please remove all lines starting with two hashes (##)--> <!--## * except the acl line, please keep that, but remove one hash, so it reads #acl ...--> <!--## * fix the acl line so it has the correct page instead of the sample Project/...Group--> <!--##acl Project/AdminGroup:admin,read,write,delete,revert Project/ReadWriteGroup:read,write Project/ReadGroup:read--> <!--##master-page:Unknown-Page--> <!--##master-date:Unknown-Date--> <!--#format wiki--> <!--#language en--> # MIFARE "[MIFARE](https://secure.wikimedia.org/wikipedia/en/wiki/MIFARE) is ... the reputedly most widely installed contactless smart card, or proximity card, technology in the world..." - thus says Thoth The technology is not just used all over the US, but globally. There appear to be 6 variants of the card, some of which are backward compatible. Differences between the variants are generally levels of security (encryption methods) and cost. The thing that makes MIFARE interesting is that it's a widely used in for transit cards like ORCA. All MIFARE cards should run at 13.56 MHz. Clipper cards do not appear to be MIFARE but they do operate at 13.56Mhz and are also ISO 14443. ## ORCA The [ORCA](https://secure.wikimedia.org/wikipedia/en/wiki/ORCA_Card) card is a MIFARE DESFire card used in the Seattle/Puget Sound region.