Glitchy Doors

I bought these new wireless earphones a while ago, and occasionally the synchronisation between the two of them would falter. I assumed that it was just the regular kind of foible that you get with consumer electronics. Especially with that form factor. But it happened earlier in the week as I was exiting the mall, and I realised that all my memories of this circumstance seem to take place at that same mall exit. And now I'm wondering if there's some weird electric interference from a security device or something at that door.

But I still like the earphones. For one thing, they're quite shiny.

Bonus Question!

Best door?

Jim Morrison.