Do you know the best way to see if someone is in the office?

You should create an #in-and-out channel on Slack and use the employees' MAC Addresses to identify who entered and left the office.

❌ Figure: Bad Example – Scream out “Where is Marlon?”

✅ Figure: Good Example – Using in/out functionality with Slack and Ubiquity Access Point

Although there is one bug with the solution: