There is nothing wrong with the project itself, but what makes me angry is his tough approach. He installed the lock first, and then told me the day before the report that Unicom's mobile phone can be unlocked with a password, and non-Unicom can only get a card by paying a deposit in 50 yuan.

Then some people even said it was an investment. Please, investing is my voluntary behavior, not forcing me to "invest" like this, okay? I feel that my money has been robbed. Even 50 yuan.

Make a calling card of Guangzhou Unicom, so that you can use their app to unlock it with Bluetooth, or you can generate a temporary password to unlock it with the app. But this is equivalent to forcing freshmen to use Unicom phone cards, and the way of dynamic password also makes entering passwords a decoration.

As a dormitory that does not need extremely high security intensity, using dynamic password is tantamount to causing trouble to students (I think it violates the principle of good faith in contract law, and I look forward to the in-depth explanation by legal experts).

"Rent" the door card from China Unicom, with a deposit of 50 yuan, but the door card is fragile. If it is broken, losing the deposit is equivalent to wasting water, and even if it stumbles for four years, how to refund the deposit and whether it needs to run far is still a mystery.

Not smart:

In any case, once the door is closed, it will automatically lock. After locking, you can't pull the door handle from the outside to open the door. If you want to open the door, you can use an access card or ask your roommate to open the door for you from the inside.

Originally, this door could also be opened with a campus card or password, but now it is forbidden for you, and you can only get an access card of 50 yuan.

To put it mildly, the card is a deposit. Once the card is lost, you must reapply. Many people lose their campus cards every day, and now they have access cards.

Reference to the above contents: official website-Panyu Campus.