Hardware for the pilgrim who cannot rely on a phone.
The software is the platform. The devices are how we reach the 75-year-old from rural Kano who has never held a smartphone — a ring she can wear, a band that finds her, and a network that works when the towers are saturated.
10 days
Ring battery on a single charge
IP67
Water resistance — safe for wuḍūʾ
30 m
Mesh range between devices
5 m
Location accuracy in a dense crowd
Worn, not carried
Optical heart-rate and SpO₂ sensing, skin temperature, a tasbīḥ counter with twelve haptic patterns, a Qiblah compass that strengthens as you turn, and a five-second SOS hold.
| Model | Price | Built for |
|---|---|---|
| Smart Ring F3 — Spiritual | $24.99 | Prayer reminders, Qiblah, tasbīḥ, heart rate, SpO₂, SOS. Ten-day battery. |
| Smart Ring D01/D02 — Health | $22.99 | Heart rate, SpO₂, blood pressure and sleep. No display, so it runs longer. |
| Smart Ring F4 — Complete | $29.99 | Everything in F3 and D02 together, with skin temperature for heat prediction. |
For elderly pilgrims and those travelling without phones
Position every five minutes, 4G for a direct emergency call, fall detection, and a voice assistant that speaks the pilgrim's own language.
| Model | Price | Built for |
|---|---|---|
| GPS Wrist Band S16 | $39.99 | GPS, 4G calling, fall detection, SOS and AI voice assistant. Four to seven days of battery. |
| GPS Wrist Band S9 | $34.99 | GPS and SOS with a simpler single-button face, for group deployments at scale. |
| Ring + band bundle | $59.99 | Full coverage for one pilgrim — health on the finger, location on the wrist. |
Every device makes everyone else safer.
When cellular capacity fails — and around the Ḥaram it always does — each Yahaji device becomes a relay. Data hops from device to device until it reaches the internet, so a separated pilgrim can be located with no coverage of their own at all.
30 m
Range per hop
0.3 s
Relay latency
0
Cellular bars required
About the hardware
Order devices for a pilgrim or a delegation.
Single orders ship internationally. Delegation orders are quoted per pilgrim with rental included in the seasonal price.