A handheld scanner that shows you what you're looking at — but only when you're actually holding it.
Scanner is a lightweight add-on for Jade that gates Jade's "what am I looking at" overlay behind a craftable item. No more info overlay cluttering your screen at all times — pull out the Scanner when you want to identify a block, entity, or item, and put it away when you don't.
This is not a fork or reimplementation of Jade — Scanner requires Jade and hooks into its public plugin API. Every feature, every addon, every config option Jade supports keeps working exactly as it does today; Scanner just decides when it's visible.
Lens — 4 Amethyst Shards around a Heart of the Sea
Scanner — a Lens in an Iron casing
My mods:

https://www.curseforge.com/minecraft/mc-mods/mobonocle
A vanilla-friendly monocle item for inspecting hp, active status effects, and mod origins on sight.