Any viable low-EMF alternative to wacom cintiq which emits a lot of electromagnetic radiation?

Wacom Cintiq products all rely on Wacom EMR technology which emits a lot of electromagnetic radiation around 250khz and 500khz. I tuned my portable AM radio to 570~580khz and heard quite a bit of noise around where my crotch, my body, and my face would be.

It seems alternative technologies are Wacom AES(Active ElectroStatic) and MPP(Microsoft Pen Protocol).

Some laptops support Wacom AES or MPP. 2-in-1 laptops contain all essential ccomponents in the monitor, so they may emit a lot of electromagnetic radiation.

I also want linux support because I use linux.

Can anyone recommend a product?

perhaps panels or foils will help, see new post referring to laptops
a Gigahertz ME 3851A does cover upto 500 kHz ( a bit less precise than upto 100 kHz but good enough ), both electrical and magnetic fields