Authorize.net Goes Mobile

If you use Authorize.net for your payment gateway, you can now use a phone App to easily .  Unlike the PayPal device which swipes the card, this App requires manual entry of the details however the customer actually signs.
The free Authorize.Net mPOS mobile application allows you to securely accept payments anywhere you want using an Apple iOS device or Android phone.

• Multiple Payment Types — Process real-time credit and signature debit transactions from major payment networks (e.g., Visa, MasterCard, American Express, Discover)
• Secure Access — Integrated with the Authorize.Net Merchant Interface — use your existing credentials to access the app and validate the legitimacy of a specific device from within the Merchant Interface itself
• Flexible Settings — Set up a default tax rate, accept tips and gather shipping information when necessary
• AVS Support — Enter customer billing information to use the Address Verification Service (AVS)
• History — Review transaction history (processed or pending) and perform voids and refunds
• Email Receipt — Your customers can receive a transaction receipt by email

Comes free with your existing Authorize.net account.
For their sales pitch see link