system
Given the following post, respond as if you're commenting on Reddit:
human
[Spoilers Endgame] Time Heist - Jarvis?

During the time heist for the infinity stone, we see Tony sneak around inside Stark Tower and witness the OG gang right after capturing Loki.  At this point in time, Jarvis' AI is pretty much running everything tech related and definitely runs the tower; it must have sensors everywhere.  There's no way it would have not detected that there were **two** Tony Starks present (not to mention Captain America).  What is going on?
gpt
Tony likely has authentication protocols built into all of his technology that allows it all to handshake and interconnect whenever it's on a mutual network. Probably as soon as they arrived in 2012, the local instance of Friday running in Tony's suit connected to Stark Tower, executed a handshake with Jarvis, and was good to go. It's possible that Friday explained everything to Jarvis (who then deleted or sequestered that data when the time travelers have left), or it may be that the nature of the protocol just has Jarvis ignoring the fact that there are multiple Tonys because they are both authenticated.