It's an smart IoT system that helps users with the entrance and exiting in home.

• Door controller: Runned inside a NodeMCU, in charge of detecting when door is openned closing and advising the main system when this happens. It is also in charge of knowing if the user left the keys in its place or not and telling so to the main system.

• Welcomer server: Runned inside a raspberry, it's the main system, in charge of telling the user wether it needs a jacket, he left his keys.