Here's what it looks like when you hit the vape in an Apple Vision Pro

• You can't get away with secretly hitting the vape during a FaceTime call using an Apple Vision Pro.
• The "Persona" avatar that's used for FaceTime calls will show a white blob.
• Let that be a warning to you secret vapers. 

So you've just purchased your $3,500 Apple Vision Pro, and you're ready to sit back, relax, and do some spatial computing while clandestinely hitting the vape.

Not so fast.

The Apple Vision Pro's "Personas" is the digital avatar it makes of your face for FaceTime video calls while you're jacked into the headset.

These avatars are incredibly creepy, slightly off, and have been largely panned by reviewers as a not-yet-ready-for-primetime feature. Too far into the uncanny valley and too unflattering for people to want to use. (An update to the Personas feature made them look slightly better.)

But you'd think there would be one upside: You could secretly be puffing away at your vape while wearing the headset on a business call with your boss, right?

Nope.

My friend just got the Vision Pro and tested it out with a FaceTime call to me. During the call, I noticed that a fuzzy white blob kept appearing over his mouth. This happened at specific moments when he wasn't talking, with a familiar cadence.

"Wait, are you … vaping?" I asked. (Yes, he was.)

It turns out that the white blob isn't depicting a puff of vapor like I initially thought. The white blob happens when anything covers the mouth — a hand, taking a sip of water from a glass, etc.

But if you thought you could get away with sneaking a few vape puffs while spatial computing and no one noticing, think again.