Per-kilo self-service restaurant system with kiosk and scale
The customer weighs the plate at the kiosk, gets a slip with the tab's QR code and pays at the counter. A per-kilo self-service system with scale, tabs and cash register in one place.
- Web & Android app
- PIX & card
- iFood built in
- e-invoice (NFC-e)
In a pay-by-weight restaurant, the line forms at the scale and the mistakes show up at the register: a weight written down wrong, a plate charged twice, a lost slip. DoFast Totem is a computer app connected to the scale. The customer places the plate, checks weight and price on screen, and gets a printed slip with the QR code of their tab. Coming back for a second plate, they hold the slip to the reader and the weight goes onto the same tab. At the register, the tab is closed like any other sale.
What changes at the scale and the register
Customers weigh on their own
They place the plate, see weight and price on the touch screen and confirm. Nobody on the team has to stand at the scale writing things down.
A price the device doesn't decide
The kiosk sends only the product and the weight. The price comes from the shop's price table, and the promotion you set up applies at the scale too.
A slip with the tab's QR code
The first weighing opens the tab and prints the slip. The next ones go onto the same tab by reading the QR code, or by typing the 5 digits on the slip.
A double tap doesn't charge twice
Every weighing has its own identity. If the customer taps Confirm twice, the system returns the same tab and does not print another slip.
The register only closes the tab
On the way out, the tab is found by its number and closed at the POS, with the drink and dessert added to it. Pix, card or cash, and the amount goes into the day's cash session.
The scale works at the counter too
The POS reads the scale over the cable and reads the barcode label the scale prints, turning the weight into the right quantity of the product.
Built to stand in the dining room with nobody watching
Pairing by QR code
The kiosk shows a QR code on screen. Whoever manages the shop points a phone at it, picks what that kiosk weighs and which store it belongs to, and approves. Nobody types anything on the kiosk.
Full screen, settings behind a PIN
In use, the kiosk is full screen and on top of everything. Settings open only with the PIN, which locks for longer after each wrong try. Forgot the PIN? Set a new one from the panel or the phone.
The slip prints right beside it
With a thermal printer connected to the kiosk computer, the slip prints right there. Without one, it goes to the print station you choose for that kiosk.
It comes back when something fails
No internet at startup shows a reconnect screen and opens the kiosk as soon as the panel answers. If the page freezes, it reloads. Updates install only while the screen is idle.
How weighing works
The kiosk is a Windows or Linux computer, a touch screen, the scale and, if you want, an 80 mm thermal printer and a QR reader. Each kiosk weighs one product, such as the buffet, at the shop's price table price. The first weighing opens the tab; the next ones add to it.
Get Started- The kiosk is a Windows or Linux computer, a touch screen, the scale and, if you want, an 80 mm thermal printer and a QR reader
- Each kiosk weighs one product, such as the buffet, at the shop's price table price
- The first weighing opens the tab; the next ones add to it
Which scale works
The scale must send the weight over a cable (RS-232, or USB that shows up as a COM port) using the Toledo or Filizola protocol, the standard for counter scales sold in Brazil. To sell by weight, it must be Inmetro-approved with its Ipem inspection seal up to date. Compatibility comes from the protocols manufacturers document, so test the scale in the panel before you open.
Get Started- The scale must send the weight over a cable (RS-232, or USB that shows up as a COM port) using the Toledo or Filizola protocol, the standard for counter scales sold in Brazil
- To sell by weight, it must be Inmetro-approved with its Ipem inspection seal up to date
- Compatibility comes from the protocols manufacturers document, so test the scale in the panel before you open
Keeping the plate's weight off the bill
The safest setup is to tare the plate on the scale itself and set it to send the net weight, because inspectors check its display. If the scale doesn't subtract it, you enter the plate's weight in the system and it is deducted from every weighing. A scale that only prints labels doesn't send weight over the cable: in that case, the POS reads the label's barcode.
Get Started- The safest setup is to tare the plate on the scale itself and set it to send the net weight, because inspectors check its display
- If the scale doesn't subtract it, you enter the plate's weight in the system and it is deducted from every weighing
- A scale that only prints labels doesn't send weight over the cable: in that case, the POS reads the label's barcode
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Per-kilo self-service — frequently asked questions
Does a per-kilo self-service system need a kiosk?
It isn't required. Without a kiosk, the scale sits at the register connected to the POS by cable, and the operator weighs and rings it up. With the kiosk, customers weigh on their own and the register only closes the tab, which takes your team off the scale.
What computer does the kiosk need?
A Windows or Linux computer, and a mini PC is enough, with the DoFast Totem app installed. Tablets and phones are not recommended, because reading the scale on them doesn't work with every cable yet.
What if the kiosk printer fails?
The weighing is saved anyway: the slip is a consequence of the sale, not a condition for it. The screen shows the tab number for the customer to write down, and on the next weighing they type those 5 digits.
Does a promotion on the per-kilo price apply at the kiosk?
Yes. The kiosk doesn't calculate prices: it sends the weight, and the price comes from the shop's price table, with whatever promotion is running.
Who can change the kiosk?
Only someone who manages the shop can approve a new kiosk, and its settings ask for the PIN. Disconnecting the kiosk in the panel makes it stop opening tabs immediately. Each kiosk belongs to one store, and its tabs open only there.
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