ID Tech's UniMag is a PCI compliant, encrypted magnetic stripe reader that works with various mobile devices.  The UniMag reads up to 3 tracks of information with a single swipe in either direction, providing superior reading performance for your mobile device.

Features:

    Plugs into audio headphone jack – no cables
    Mechanical design allows easy and reliable card swipe
    No external power supply required
    Superior magstripe reader performance
    Bi-directional card reading
    Reads up to three tracks of card data
    Data is encrypted for end-to-end security using TDES, DUKPT

Compatible Hardware (hardware version):

    Apple iPad
    Apple iPad 2
    Apple iPhone 3G
    Apple iPhone 3GS
    Apple iPhone 4
    Apple iPod touch 3rd generation
    Apple iPod touch 4th generation
    LG Optimus S (2.1)
    LG Optimus T (2.2)
    Motorola DROID 2 (2.2)
    Motorola DROID Defy (2.1)
    Motorola DROID Pro (2.2)
    Motorola DROID X (2.2)
    Motorola Milestone (2.1)
    Motorola Xoom Tab (3)
    Samsung Nexus S (2.3.3)

Compatible Software:

    AprivaPay
    iPay POS Credit Card Terminal for iPhone and iPad
    VeriAge