Proximity alert wearable for low-vision owners and pets
Problem
Low-vision and blind pet owners can't tell when their cat is near them, risking trips, falls and accidentally hurting the animal. Existing trackers only do geofencing for lost pets (alert when the pet leaves a range), not one-way proximity alerts to the owner. The r/Doesthisexist post (16 upvotes, 30 comments) asks for a wearable that vibrates or beeps when the tagged cat is close, without a collar receiver that would terrify the pet.
Opportunity
A one-way proximity tag (on the pet) + wristband receiver (on the owner) that alerts through sound/vibration when the pet is within ~2m, designed for low-vision users; same mechanism extends to guide-dog-adjacent use cases and dementia care.
Market analysis
No commercial one-way proximity wearable was found — only DIY builds (a LoRa pet proximity tracker) and forum threads asking for the same inverse-geofencing behavior, which confirms the niche is genuinely unserved. But it is assistive hardware: small audience, real safety value, and physical-product economics (BOM, certification, fulfillment) that solo software builders usually underestimate.
Market · Low-vision and blind pet owners, with plausible extension to dementia care and guide-dog-adjacent use; small accessibility niche with echoed demand across Reddit and SmartThings forums.
Pricing · Consumer pet trackers cluster around one-time hardware pricing with optional subscription tiers; assistive devices can command a premium, but volumes stay small.
Pros
- + Genuinely novel: no commercial product does owner-directed proximity alerts.
- + Strong safety and emotional value for a well-defined, underserved niche.
- + The same tag-plus-receiver mechanism extends to dementia care — a second market.
Cons
- − Hardware BOM, radio certification and fulfillment are heavy for a solo builder.
- − Tiny addressable market caps revenue even if execution is perfect.
- − BLE signal strength cannot reliably distinguish '2 m away' from 'behind a wall', risking constant false alarms.
Existing / similar tools
Source
r/Doesthisexist (Reddit)
The non-obvious risk is RF physics, not product design: Bluetooth RSSI is a terrible distance estimator indoors, and a tag “2 meters away” behind a sofa looks identical to one “4 meters away” in the open, so a naive build would false-alarm constantly — fatal for a blind owner who must trust every alert. Ultra-wideband ranging chips solve exactly this and are dropping in price, which makes the receiver architecture the actual technical decision, not the tag. A credible low-risk entry is software-first: a UWB or BLE tag plus a phone-watch app that haptically pulses as the pet closes in, deferring the purpose-built wristband until the interaction is proven. For this audience, one unreliable alert destroys the product, so ranging accuracy is not a feature — it is the whole thing.