Designed for use with any Windows Pocket PC, laptop or tablet with a PCMCIA or CF card slot, the CF Mag Stripe Reader 4E from Socket captures data from driver's licenses, IDs and credit cards to increase mobile worker productivity. Together with a wireless network, it can be used for online credit card authorizations. As a mobility-friendly product, the CF Mag Stripe Reader 4E is easy to use, reliable, and maximizes the battery life of the mobile device. No external batteries or power adapter are needed. 1, 2, & 3 Stripe.