Bypassing regulatory locks, hacking AirPods and Faraday cages
Hackers have figured out how to bypass Apple’s regional restrictions on the new AirPods Pro hearing aid feature by isolating devices in a homemade Faraday cage and spoofing GPS, Wi‑Fi and network conditions so the system believes it’s in an approved country. Commenters explore how the feature is technically just a specialized equalizer profile pushed to the AirPods, compare its capabilities and limits to traditional hearing aids, and note the huge potential cost savings in markets like India. The conversation broadens into the ethics and mechanics of geo-locking medical-style features, the role of regulators, and creative RF experiments enabled by DIY Faraday cages.
Behavior of the Hearing Aid Unlock
- Enabling the feature appears to be a one-time action: it sets a flag on the iCloud account and pushes an EQ profile into the AirPods’ transparency mode.
- The setting sticks across regions and continues working unless the AirPods are reset.
- If the AirPods are enabled on one account but used with another account where the feature is “unavailable,” that second account can’t tweak the settings.
- Some commenters say similar functionality already existed via audiogram-based “Headphone Accommodations” before the new hearing-aid branding.
Region Locking and Location Spoofing
- The feature is region-gated; questions arise about whether the flag might later be revoked when the device spends time outside approved regions (unclear).
- Some users report that Apple treats account region, physical location, and mobile network region differently for other features (e.g., EU app-store rules, ECG).
- VPN alone is insufficient because Apple relies heavily on Wi‑Fi SSIDs/MACs and GPS; the hack therefore used a Faraday cage plus spoofed Wi‑Fi.
- Suggestions include external spoofed GPS devices, fake base stations, and using EU/US accounts simultaneously for other geo-locked features like alternative app stores.
Faraday Cage Construction and Uses
- The initial “microwave-as-cage” prototype was too leaky; a sturdier cage was built from fine copper mesh and aluminum extrusions.
- A walk-in cage is praised as far more usable than small tabletop boxes, enabling hands-on testing and complex setups.
- Proposed uses: RF isolation for measurements, playing with rogue Wi‑Fi/cellular networks, GPS spoofing, and general network research without affecting live systems.
Hearing Aid Performance and Constraints
- The feature is officially limited to mild–moderate hearing loss; one user had to redo the hearing test until results fell within that range.
- Early anecdotal feedback from elderly users: sound is “different” but acceptable; battery requirements are similar to existing hearing aids.
- Questions remain about how well it handles profound or asymmetric hearing loss; current behavior reportedly averages both ears into one profile.
Regulation, Lock-In, and Alternatives
- Debate centers on whether geo-locking is justified by medical-device regulation versus being hostile to users.
- Some argue open firmware or free software would let users bypass such restrictions or avoid them entirely.
- Discussion touches on high hearing-aid prices (especially for custom DSP molds) versus the much lower cost of AirPods and on emerging open-firmware TWS earbuds.