Dear buyer, Welcome to my shop, if you have any question please let me know, I will do my best to help you when received your mail(will reply within 48hours), thanks for your understand,if want many quantity or many items total please contact me,maybe will have a good price,Have a nice day! Note: The software is free and for test only,it can be change the 8 digital UID and Change the code DEC to HEX, but maybe can't use for your computer,we are not want have any problem about software,when you bid the item I think you was agreed this,thanks. after received your payment I will send the software to you within 3 days. The ACR122U Reader is a PC-linked contactless smart card reader/writer developed based on the 13.56 MHz Contactless (RFID) Technology. ACR122U is compliant with both CCID and PC/SC. Thus, it is a plug-and-play USB device allowing interoperability with different devices and applications. With an access speed of up to 424 kbps and a full USB speed of up to 12 Mbps, ACR122U can also read and write more quickly and efficiently. The proximity operating distance of ACR122U is up to 5 cm, depending on the type of contactless tag in use. In order to increase the security level, ACR122U can be integrated with an ISO 7816-3 SAM slot. Furthermore, the ACR122U Reader is available in module form, permitting easy integration into bigger machines, such as POS terminals, physical access systems and vending machines. The ACR122U Reader is ideal for both secure personal identity verification and online micro-payment transactions. Other applications of the ACR122U include access control, e-payment, e-ticketing for events and mass transit, toll road fare collection and network authentication. FEATURES: • USB 2.0 Full Speed Interface • CCID Compliance • Smart Card Reader: • Read/write speed up to 424 kbps • Built-in antenna for contactless tag access, with card reading distance of up to 50 mm (depending on tag type) • Supports ISO 14443 Type A and B cards, MF, FeliCa, and all 4 types of NFC (ISO/IEC 18092) tags • Built-in anti-collision feature (only 1 tag is accessed at any time) • Application Programming Interface: • Supports PC/SC • Supports CT-API (through wrapper on top of PC/SC) • Peripherals: • User-controllable bi-color LED • User-controllable buzzer Package include: ACR122U Reader Writer x1 13.56MHz Rewritable MF1 IC card x3 Free English software x1 Shipping: We Ship to Worldwide. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Please check with your country’s customs office to determine what these additional costs will be prior to bidding/buying. The item will be shipped out within 48 hours on the weekdays ( Monday to Friday ) or the next business days on the weekend after full payment must be received. Only ship to the Address. Please make sure your address in is Correct before you pay. we are not responsible for any wrong or undeliverable addresses. We will ship out the item by AirMail from China or Hong Kong Post Office. If want send by DHL UPS EMS or other Express shipping please contact me to change the shipping cost. We will send the item as " GIFT " It takes about 15-40 working days to arrive. Sometimes take a little longer , Due to Local dispatch or other reasons, It might goes more than 20 days . Payment We accept PayPal only. All major credit cards are accepted through our secure payment processor PayPal. Payment must be received within 10 days of auction closing. Refunds Returns If you do not satisfied with your purchase, or if it is damaged when receive, please let us know, we will do our best to help. If the problem cannot be solved, please return it to me in the condition it was received within 7 days. we will send you replacement or give you a refund. All returns should include all original items undamaged, in re-saleable condition, all original packaging including manuals, warranty forms. Buyers is responsible for the returning shipping cost. We care about our valued customers, and will always try to help you. So if you have any problems, please message us immediately. Please give us the opportunity to resolve any problem. We understand the concerns and frustrations you might have, and will try our best to resolve the issues.Please contact us BEFORE leaving any negative or neutral feedback or open any dispute on paypal.