Mobile phone card reader disassembly and comparison: the total cost of La Kala cannot exceed 50

Both the box payment and lacara Products UseRSA EncryptionThe function is very similar. The general structure after disassembling is as follows:

Box payment:
Products paid by box

2-track card reading chip hcm8002 + encryption chip + silabs c8051There are three chips in total, and the remark of the encryption chip becomes the name of the box to pay for itself;
UseLithium battery power supplyThe USB port can be used to charge the battery;

Lacara:
Lacala pushes mobile phone card reader into mobile payment price 199 yuan

24pin encryption chip + amplifier chip (2-way amplification, 2-track decoding supported), two chips in totalWhich of the following solutions should be used?Soft DecodingThe MCU in the encryption chip and the amplification circuit are used to complete the soft decoding of the head signal;

3 V button battery power supply, cannot charge;

Comparison:
The cost of payment in the box is significantly higher than that in La Kara, and the total cost of La Kara is no more than 50. However, because it uses a soft decoding card, the card reading success rate may be lower. However, the card reading success rate of the current mobile phone card reader is closely related to the card swiping method. The differences between soft decoding and hard decoding are not shown.

Summary:
Because the current cost of card reading chip is still relatively high, the scheme of using the encrypted chip for soft decoding may be the mainstream of the mobile phone card reader.

Additional reading:

Interview with Han Sen, founder of Box payment

 

Lacala pushes mobile phone card reader into mobile payment price 199 yuan