Cookies & Storage

Last updated: 25 September 2026

In short: MartDesk uses no advertising or tracking cookies and no analytics. It only keeps what is needed on your device to keep you logged in and to let billing work without internet. Because all of it is strictly necessary, there is nothing to switch off.

1. What we store on your device

Name / key	What it's for	How long
`sb-…-auth-token`	Keeps you logged in (login provider: Supabase)	Until you log out
`md-last-access`	Your shop and role, so the counter can open without internet	Until you log out
`md-cache-…`	Copy of products, customers and settings for offline billing	Until you log out (kept if bills are still waiting to be sent)
`md-offline-…`	Bills made without internet, waiting to be sent	Until they are sent
`md-cart-…`, `md-held-…`	The bill you are making and held bills, so nothing is lost on refresh	Until the bill is saved or cleared
`md-device`, `md-first-seen-…`, `md-last-backup-…`, `md-label-opts`	A random device code for offline bill numbers, backup reminder, label print choices	Until you clear browser data
App files (service worker cache)	Lets the app open fast and without internet	Replaced on every update

These are stored with your browser's "local storage" and app cache, not sent to anyone else. The demo (?demo) keeps its sample shop only in your browser too.

2. What we don't use

No Google Analytics, Facebook Pixel or any other tracking or advertising tool.
No third-party fonts or embeds are loaded; the app's font is served from our own site.

3. Things your browser may contact

Voice billing: only when you press "Say items", your browser's own speech service (Chrome: Google) turns speech into text.
Barcode lookup: for an unknown barcode, the barcode number may be looked up on Open Food Facts.
WhatsApp / email / UPI apps: only when you tap a button to open them.

4. Clearing it

Log out to remove your login and shop copies from the device. You can also clear site data in your browser settings; send any waiting offline bills first, or they will be lost.