Something's Off in This World. Era Anomaly Quiz

Something's off in this office, isn't it?
Spot the old tool hiding in plain sight today.

A station, an office, a bank counter, a hospital at night — somewhere, one thing belongs to a different era.

A station attendant holds up an hourglass to time the departing trains.
Someone signs documents with a quill dipped in ink.
A bank clerk clicks the beads of an abacus to do the math.
— Someone is actively using an "old tool" that should be long gone.

This game is a click puzzle where you spot the "old tool that doesn't belong" hidden in a full-color modern or near-future scene.
It's drawn in vivid full color, not sepia, so color won't help you find it.
You'll have to notice it by shape, silhouette, or the strangeness of how it's being used.

50 scenes in all.
Train stations, airports, subways, offices, homes, libraries, hospitals, schools, shops, factories, and even near-future scenes —
every scene looks like normal everyday life, but one thing that shouldn't exist in the modern day is hidden in "active use."

How to play is simple.
・Observe the scene carefully
・Tap the old tool that doesn't belong to this era
・The answer and "what the tool is" are revealed

Hints gently suggest the tool's purpose or function, so you won't get stuck.
They never tell you where to look, so the joy of figuring it out is all yours.

The thrill of "Wait, is that from the old days?"
The pleasure of "I never knew that existed!"
A grown-up observation puzzle that hops between eras.

So, can you spot what's off in this world?