Mophie,  popular iPhone and iPod accessory and battery add-on maker, will unveil at Consumer Electronic Show  in Las Vegas this month its iPhone credit card reader and third-party app .

Accessory, named “Credit Card Reader” along with a complimentary third party processing application will allow iPhone users to accept credit payments by swiping their credit cards through a special casing attached to their mobile phone.

The device, which will turn any iPhone into a credit card reader, will be a direct competitor to Square, which is developed by Twitter co-founder Jack Dorsey.

Mophie’s credit card reader will compete with other electronic payment solutions such as Swipe ($0.99 on iTunes App Store), VeriFone’s PAYware Mobile, Intuit’s GoPayment and Square.