What is the UV flashlight for, and why does mine not work?

Steps

1. Pick the lamp up with the left mouse button as you would any tool.
2. Press T to cycle the lights. The UV lamp comes after the regular light, so one press may not be enough.
3. Point it at surfaces you have already searched; what it reveals is markings, numbers and interactions rather than objects.
4. Use it on the Anomaly Crafter to discover the interaction that turns a Pickaxe into the Access Card.

Requirements / limits

• What the lamp reveals is documented by one community reference published 25 August 2026.
• The toggle behaviour is documented by a discussion thread of 26 August in which a player believed the lamp had vanished, another player asked whether they had pressed T twice, and the original poster confirmed it had been there all along.
• Update 1.0.5 already noted that the Torch Light and UV Lamp are collected correctly and work on collection, but still need T to activate. That is the developer describing the same two-step.

Common mistakes

• Reporting a lost UV lamp before pressing T a second time. This is the most common false alarm on the subject.
• Searching for the Access Card as a findable object. It is crafted, not found.

Still unverified

• Where is the UV flashlight found?Not verifiedThe reference lists it among the three hidden items and says what it does. Neither it nor any developer source states a location.