Features of several cell phone card readers

Http://www.iboxpay.com/Index/products/
The box payment card reader has two payment options,
1. One multi-platform instance with 120mA Rechargeable Battery
2. Dedicated IOS edition, self-powered, charge-free

Http://www.yeahka.com/Search_download.html
Happy brush has almost no online Introduction Information.
Judging from the information on the official website:
1. There is only one card swipe, and many mobile phones are supported, but it seems that the support is not good (currently some mobile phones and tablets are not supported). Note: some mobile phones need to be flushed to support the 1.5 card reader.
2. The card reader is not required for the Symbian mobile phone. ?? I don't know what's going on.
3. Currently, happy brush is almost using the white mail policy to increase market share. Revenue is achieved by the service charge model. Http://www.yeahka.com/yajin_buy.html

Http://www.minishua.com/Minishua/index.aspx
With a built-in battery and an additional USB charging cable, the Mini brush of shengfu Tong is used.

 
Compared with happy brush, it can only be used for personal consumption. The mini brush is used for personal and business versions, and the Business version can be used as a POS machine to receive orders.
Some features of mini brush are very good:
An independent external standard card reader and password keyboard are provided with multiple protection measures, including financial-level encryption chips, four sets of work key rounds, auto-destruction upon startup, and terminal binding, to ensure that sensitive transaction information is safe;
The first "Mobile Phone simulated automatic correction" Module effectively prevents orders from being dropped and the system does not respond, ensuring the security and timeliness of offline transactions;
The first is the "cloud management" mechanism of transaction information to avoid future transaction disputes and safeguard the legitimate rights of both parties;