This is an app to control a door open system. The door is open by saying passwords to the phone. If the passwords are correct, the phone would disengage the door lock bolt for 5 seconds via bluetooth communications between the phone and the door system.
9Apps 4.9
![국세청 홈택스 [손택스] on 9Apps](https://sg-res.9appsdownloading.com/sg/res/jpg/f7/df/69cc2f90120ec331db2630e0f5b6-6dh.jpg?x-oss-process=style/jmq200)
