No, I have never switched it on.

Electrosmog with the Kindle Scribe at a glance
1. e-ink display
- Works passively: The image is only rebuilt when turning pages or writing.
- After that it stops without power.
- Means: No permanent flickering, no continuous radiation as with LCD/OLED screens.
2nd pen (Wacom EMR)
- The screen generates a weak electromagnetic field (EMR) to recognise the position of the pen.
- Comparable to a very weak RFID signal.
- Intensity: very low, typically well below international limits.
3. WLAN
- The Kindle Scribe has WLAN (2.4 and 5 GHz).
- Electrosmog exposure similar to any smartphone or tablet - but:
- significantly less active because the Kindle usually only sends data when synchronising.
- WLAN can also be completely deactivated ("flight mode") → then practically no radio radiation.
4. overall assessment
- In everyday use, the electrosmog exposure from a Kindle Scribe is extremely low.
- The main source would be WLAN → if you are sensitive, simply set it to flight mode and you will only have the minimum EMR field strength of the pen display.
- In comparison: A smartphone directly at the ear or a Wi-Fi router in the home emits many times stronger.

👉 Conclusion:
The Kindle Scribe is very "clean" in terms of electrosmog - especially if you use it in flight mode. The e-ink display itself is passive, and the EMR field for the pen is far below health-relevant values.