Will there be a problem with airport security?

After Cochlear implant surgery, you'll be given an identification card that you can show to airport security staff, letting them know you shouldn't pass through the metal detector. It's a good idea to carry this manufacturer ID card with you whenever you travel, since it makes explaining the situation at security much quicker and avoids any confusion at the checkpoint.

That said, this is really more about convenience than necessity. Metal detectors and body scanners don't actually damage the device, so there's no real safety risk if you happen to go through one without realizing it. The card is mainly there to help you avoid an unnecessary pat-down or additional screening, and to give security personnel a quick, clear explanation for why you might be wearing external hearing equipment.

Some travelers still prefer to remove the external processor before going through security, just for peace of mail, and that's perfectly fine too. Either way, showing the ID card and letting staff know about the implant ahead of time usually makes the whole process smoother and faster, so you can get through security without unnecessary delays or questions.