Update, 17 August 2026 — this post is superseded.
The audio module described here was removed from the product. The buckle cavity has
8.6 mm of usable depth, and an acoustic nozzle aimed into the ear eats most of it
before the body of the part begins — every shape that fitted stopped being an
earpiece. The belt now measures waist circumference from the tension in its own
strap. The full arithmetic is here:
I deleted my product's main feature over 8.6 mm.
This post is left up unedited below as a record of what was true when it was written.

We glance at our smartphone screens over 100 times a day. Most of the time, it's for something trivial: confirming a navigation turn, taking a 10-second call, or authenticating a device.

Smartwatches tried to solve screen fatigue, but they just put a smaller screen on your wrist.

I'm building Vyldor — a screenless smart leather belt designed as a physical interface for the smartphone already in your pocket.

Why a Belt?

A belt is something millions of people wear every single day. Unlike wrists or pins, your waist offers unique physical advantages for hardware design:

It stays at your body's centre of mass.
It maintains constant pressure against your hip bones.
It has enough surface area for a 1-metre loop antenna.

Here is how Vyldor turns a traditional leather belt into a screen-free phone controller:

🎧 1. Pull-to-Talk Earpiece in the Buckle

Inside the 11.8mm CNC-machined aluminium buckle cavity sits a mono audio earpiece.

Draw to speak: Pulling the earpiece out automatically opens a voice session with your phone. No wake-word ("Hey Siri") and no always-on listening microphone.
Dock to end: Snapping the earpiece back into the buckle instantly closes the call and begins magnetic charging.

🧭 2. Haptic Hip Navigation

Instead of looking down at a map while walking, running, or cycling:

Left Hip Tap: Vibration tap on your left hip bone means turn left.
Right Hip Tap: Vibration tap on your right hip bone means turn right.

You navigate complex city streets purely through tactile feedback against your waist.

🔑 3. Your Body is the Key (Body-Coupled Signalling)

Vyldor uses Body-Coupled Signalling (BCS) to transmit a harmless microamp signal through your skin using soft contact pads on the inside of the strap.

When you touch your laptop trackpad, a smart door handle, or a payment terminal, your body transmits the authentication token instantly. No fingerprint scans, no passwords, no keycards.

👣 4. Your Walk is the Password (Gait Authentication)

Wrist wearables struggle with biometric tracking because arm movement creates massive noise.

Vyldor embeds a 6-axis IMU directly at your body's centre of mass. Within 20 steps, the sensor reads your unique gait dynamics to verify that it is actually you wearing the belt.

⚡ 5. 1-Metre Woven Loop Antenna

Wrist wearables have cramped ground planes that throttle Bluetooth signal strength.

By weaving conductive thread directly inside the 37mm full-grain leather strap, Vyldor creates a 1-metre loop antenna around your waist, dramatically improving Bluetooth stability and range.

Complete Engineering Transparency

Vyldor is currently an early-stage parametric design concept.

We built no physical hardware yet, there is no price, and no release date. Every visual asset on our site is rendered live from a single CAD model, and we publish what is NOT built on our status page.