What you want to ask is that the multi-function handwritten signature screen of household administration can't enter the code? Equipment failure or software problem. According to the query, Zhongguancun is displayed on the Internet.

1. The reason why the handwriting input function can't be used may be that the equipment is out of order. In this case, it is necessary to check whether the hardware of the device is normal, such as whether the touch screen is damaged, whether the battery is sufficient and so on.

2. Software problems are also common reasons why the handwriting input function cannot be used. It may be that there are some faults in the equipment system, which makes the handwriting input function unable to be used normally. You can try to restart the device or update the system to see if you can solve the problem.