Couldn’t they run them through an airport x-ray scanner to see if the badges include electronics?

And how would such a tracker work? Like AppleTags but built into Chinese-made phones?

> The rollout of British military badges redesigned for the accession of King Charles has been delayed over fears the new insignia could be made in China and risk allowing the Beijing authorities to insert tracking devices.

Ah, a lack of bravery of the British military in the face of foreign embroidery.