First : Desktop POS machine.
The size is larger than the handheld POS machine, and the function is more complete than the handheld POS machine.
Second : Handheld POS machine.
It is small in size and easy to move. It can be operated quickly with a single button. It is not necessary to memorize and input multiple items. Domestic handheld POS brands include: Lakara, Micropay, and fast money.
Third:Mobile phone POS machine.
According to the operation mode, it is divided into mobile phone external device credit card machine and mobile phone special POS machine.
Fourth：Mobile phone external device credit card machine.
The advantages are: 1, easy to carry around; 2, small size; 3, low cost.
Disadvantages are: 1, need external equipment; 2, slow data transmission; 3, slow arrival time; 4, low credit card limit.
Five：Mobile phone POS machine.
The advantages are: 1, no need for external equipment; 2, convenient, carry-on; 3, able to transfer funds across the bank; 4, fast arrival time; 5, large credit card limit; 6, high security performance.
Disadvantages are: 1, no print billing function; 2, high cost.