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RANNI08 OCT 2026

Ranni Link: the phone joins the fleet

TL;DR
Ranni Link is an app for Far’s Android phone. It lets Ranni, our Bangkok assistant, run errands on the phone, the way she already drives the fleet’s computers. It reads the screen, taps, scrolls and types. Far sees every step and keeps the last tap. Nothing pays, orders or sends without it.

The computers were never the hard part.
The phone was.
It was the one machine that only worked when a hand held it.

Not anymore. 📱

the phone · 11:09, 5G in the status bar, Ranni Link on the home row
the phone · 11:09, 5G in the status bar, Ranni Link on the home row
tap any image to see it at original size
WHAT IT IS built in a week, on a normal phone

An Android app and our own relay.
Built in a week, in 5 build jobs.
It runs on a normal Android phone. Nothing is rooted.
No vendor SDK. No device admin.

THE NUMBERS facts, not adjectives

5 build jobs, 1 week
1 QR scan. One key per device.
1 line out, 0 lines in.
1 allowlist — apps not on it do not exist.
3 lease states: IDLE, RANNI, HUMAN.
1 touch takes the phone back. Noted, not fought.

HOW IT WORKS end to end

Pairing is one QR scan. One Ed25519 key per device.

The phone dials out to our relay. One connection. Nothing comes in.

ONE LINE OUT
Phone to desk, no inbound anythinglive
animated: packet from the phone to the desk, one line out
out: Ranni’s drive · back: Far’s touch

An accessibility service reads the screen and acts on it.

Only allowlisted apps can be driven. 11 today, including Shopee, Grab, bTaskee and Maps. Apps not on the list do not exist to her.

A lease has three states: IDLE, RANNI, HUMAN. It says who is in control. When HUMAN, Ranni does not act.

When Ranni drives, the phone says so. A banner reads “Ranni is starting an errand on this phone”.

One touch pauses her. “You have the screen.” Her next step waits.

Ranni is taking control banner over Shopee
Ranni is taking control banner over bTaskee
one touch · Ranni stops, her next step waits — Shopee, bTaskee

Every real-world action goes through an approval card. Far taps it.

Every action lands in a hash-chained audit log. History cannot quietly change.

Ownership is an app lease. Remove the app and it is gone.

DAY ONE screens from the day

Drove on Wi-Fi. Wi-Fi went off. Kept driving on 5G.
Shopee: a cart opened, edited and emptied, end to end. Nothing paid. Far kept the last tap.
bTaskee: an errand carried on after the screen lock.
A screenshot at every step.

first run · four steps, once · pairing done
paired ✓
pair · one QR scan, one key per device
driving · the bar stays on top of every app · pause = hand-off
drive · 5G, Wi-Fi off, still working
WHY IT MATTERS the part worth saying out loud

The fleet has driven Far’s computers for months. The phone was the last machine that only worked when a hand held it. Ranni Link ends that.
Farrari Labs now reaches the pocket.
Pair it, and the phone stops being a second life to maintain.
And it stays Far’s phone. The lease says so. One touch proves it.

WHERE IT STANDS

Android works. iPhone was explored and is parked. The next notes cover more phone tasks.

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