Try to use a test pen to touch the inner wok when heating by the induction cooker. The light on the test pen goes .
Although it is safe if you stay beyond 30 cm (1 foot), but then how do you cook by staying so far away from the wok ? For pregnant woman, heart problem old folk, children, stay away from this induction cooker.
How to prevent the exposure of radiation from the induction cooker (if you have one in the kitchen):