Everything it does
Three controls, 28 functions
The belt asks three things of you: pull the module out, feel a tap, press once. Everything below is what those three actions can mean, plus the things a belt can sense that nothing worn on a wrist can. All 28 are set in the app, and the sensing ones start switched off.
Read this list as a design specification, not a changelog. None of it has run on hardware yet, because there is no hardware yet. The first group is what makes this different from an earbud with an assistant attached. The two after it are the everyday functions, in the order they get built.
01 · 8 functions
What nothing else can do
A belt has three properties no other wearable has: it is a closed loop around the torso, it holds a large area of skin contact, and it sits at your centre of mass. These functions exist because of that, and they are the reason this is not an earbud with an assistant attached. All of them are additions to the design, none has been built.
- 01
Your body is the key
The belt puts a microamp signal into you, so whatever you touch can tell it is you. Touch your laptop and it unlocks. No card, no password, no fingerprint reader. This needs a large area of skin contact around the torso, which is why a watch cannot do it. The first version works with a laptop; a door or a car needs a receiver we would have to make.
- 02
Your walk is the password
The waist is where movement labs put their sensors, because a wrist reads mostly noise. Your gait is close to unique, so the belt keeps quietly confirming that it is still you wearing it, and notices within about twenty steps if it is not. Paired with the key above, you never log in again.
- 03
The strap is the antenna
A metre of conductive thread woven around the strap makes a loop aerial far better than anything on a wrist. It is invisible, adds no thickness, and it is what makes the two functions below possible at all.
- 04
Haptics that move, not tap
With two zones and precise timing, the brain reads one sensation travelling around your waist rather than two separate taps. That turns the belt from a buzzer into something with a vocabulary. It is firmware, not hardware, so it costs nothing.
- 05
Centimetre-accurate presence
Ultra-wideband ranging knows how far away things are to within a few centimetres, not metres. Unlocking that cannot be relayed by a thief standing outside your house, finding another person to a step, and a smart home that knows which room you are actually in.
- 06
Waist measurement over months
A strain gauge inside the buckle's load path reads how tight the belt sits. It costs pennies and adds no thickness, and it tracks the number people watch more closely than weight when something is changing. No device measures this on its own today.
- 07
It knows when it is being worn
Two thermistors, one against you and one facing out. The difference between them is a reliable answer to a question every other function depends on, instead of guessing from movement.
- 08
Messages with no phone and no signal
The loop antenna plus a low-frequency radio reaches kilometres, belt to belt, with no SIM and no network. Useful on a mountain, at a festival or on a site. It only becomes worth switching on once enough belts exist, so it is deliberately second in the queue.
02 · 10 functions
The first ten
These are what the first version of the app is built around. If the belt only ever did these, it would still be worth wearing.
- 01
Pull-to-AI
Sliding the module out of the dock is what opens a voice session. No wake word, no listening while it sits in the buckle.
- 02
Private voice and calls
One earpiece rather than two, so a call or a dictated reply stays between you and the phone in your pocket.
- 03
Return-to-Silence
Push the module back into the dock and the session ends and charging starts. Ending a conversation is a physical act, not a menu.
- 04
Physical confirmation
One deliberate press to approve anything you would not want happening on its own.
- 05
Whisper Queue
Anything that arrived while you were busy is held instead of interrupting, then read back in one go when you ask for it.
- 06
Attention Firewall
An allow-list for your body. You name who and what is permitted to reach you at all; everything else waits in the queue.
- 07
L/R HapticTurn
The hip nearest the turn taps a short pattern a few seconds before you need it. Left is left, right is right.
- 08
Phone Leash
One pulse if the phone stops answering while you are moving away from it. A reminder, not a tracker and not a security device.
- 09
ContextMorph
The same button and the same taps mean different things depending on what your phone is doing: on a call, in a map, on a camera.
- 10
No-cloud mode
Restrict the belt to whatever your phone can do on-device. Slower and simpler answers, nothing leaving the handset.
03 · 10 functions
Planned after that
All of these are software on the phone side, so they can arrive without changing the belt. They are queued behind the ten above.
- 01
Live translation
Ask in your language, hear the translation in the earpiece, without holding a phone between two faces.
- 02
Read it back short
A long message, email or page summarised out loud instead of read on a screen.
- 03
Contact priority
A named few who can always break through the firewall, with their own tap pattern so you know who it is before you answer.
- 04
Media control
Play, pause and skip without taking the phone out of a pocket or a bag.
- 05
Camera shutter
Trigger your phone's camera from where you are standing. The belt has no camera of its own and never will.
- 06
Presentation control
Advance a slide with one hand at your waist, with no clicker to hold or lose.
- 07
Timers and reminders
Set by voice, delivered as a tap at the hip rather than an alarm everyone in the room hears.
- 08
Smart-home scenes
One press runs a scene your phone already controls, so you are not unlocking a screen to turn a light off.
- 09
Profiles
Work, home, travel. Different rules for who gets through and what the button does, switched by you or by location.
- 10
Find my phone
One press makes the phone ring, for the times it is under a cushion rather than genuinely lost.
04 · 1 function
Would need hardware we have not committed to
Listed because people ask, not because it is planned. It is the one addition we have looked at and left out.
- 01
NFC in the buckle
A tap target in the belt itself, for transit or door access. It is not in the current design and we will not imply it is.
The app
Every one of these can be switched off
The belt itself holds no settings. It vibrates, it charges the module and it reports a button press. Everything else is a rule on the phone: which contacts get through, what a left tap means against a right one, how strong the pulses are, what the button does in each app, and which of the functions above exist for you at all.
That is deliberate. A feature you cannot turn off is not a feature, it is an imposition, and a belt that quietly decided things for you would be worse than the phone it is meant to replace.
Anything that touches identity starts off. Body signalling and gait verification are biometrics, so they ship disabled, with a plain explanation of what is stored and where, and a switch you control. A belt that quietly learned to recognise you without asking would be worse than no belt at all.
Being straight about it: I will build that app if enough people want the product. It is months of writing and support, and it is not work worth doing for something nobody is waiting for. The waitlist is how I find out, and it is the only reason it exists.
Which of these matters to you?
Join the waitlist and reply to the first email with the one function you would actually use. That is what decides the order they get built in.
Thinking about backing it instead? Read the investor page