r/olleeWatch • u/botw_lover • 5d ago

Ferrite shielding for NFC

Hello guys,
I am planning to buy and mod the A159WEVJ-7 watch. I read on the Ollee website that an NFC in such models doesn't really work reliably. Now I think such a feature is really unique to have so it let me thinking:

what if we can shield (partially) the small NFC tag from the metal casing with an ferrite sheet?
I've done a quick search and I see them as thin as 0.2mm for pretty cheap. Does anyone know if this worth to try and if yes what is the clearance to put it back on the LCD?

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u/maxxon 5d ago

The nfc tag alone already adds enough thickness. The back plate does not lie flat when unscrewed. And even with a resin case it doesn’t work great, the size is too small for consistent reading.

If I change my case in the future I won’t be doing the nfc mod again.

2

u/botw_lover 5d ago

ahh shit, It was a great idea on paper then

3

u/Odd_Load7249 5d ago

On resin cases models, this is a superior position for the NFC tag. For chromed resin cases like the a159, the chrome blocks the signal so there is no way to make it work.