[{"data":1,"prerenderedAt":280},["ShallowReactive",2],{"blog-en-scan-receipts-without-cloud":3},{"post":4,"related":261,"translations":275},{"id":5,"title":6,"body":7,"date":237,"description":238,"extension":239,"icon":240,"key":241,"keywords":242,"meta":249,"navigation":250,"path":251,"seo":252,"slug":253,"stem":254,"tags":255,"__hash__":259,"minutes":260},"blog/blog/en/scan-receipts-without-cloud.md","Scan Receipts Without a Cloud Reading Along: How a Private Receipt Scanner Works",{"type":8,"value":9,"toc":225},"minimark",[10,14,18,21,26,29,58,61,65,68,71,75,78,111,114,117,121,133,136,139,143,150,153,157,160,163,167,187,191,194,197],[11,12,6],"h1",{"id":13},"scan-receipts-without-a-cloud-reading-along-how-a-private-receipt-scanner-works",[15,16,17],"p",{},"Snap a photo of the receipt and let the app do the rest: it sounds like the perfect fix for tedious typing. Plenty of apps offer this now. What they rarely mention is that in most cases the photo is uploaded to a server and analysed there by a cloud AI.",[15,19,20],{},"Here's why shopping receipts reveal more than most people think, and how it can be done differently.",[22,23,25],"h2",{"id":24},"whats-actually-on-a-receipt","What's actually on a receipt",[15,27,28],{},"A supermarket receipt looks harmless. A closer look reveals:",[30,31,32,40,46,52],"ul",{},[33,34,35,39],"li",{},[36,37,38],"strong",{},"Where"," the shopping happened: the branch, often with its address",[33,41,42,45],{},[36,43,44],{},"When",": down to the minute",[33,47,48,51],{},[36,49,50],{},"What"," was bought: every single product",[33,53,54,57],{},[36,55,56],{},"How"," it was paid: often with the last digits of the card",[15,59,60],{},"Over weeks and months, that adds up to a surprisingly detailed picture: where someone lives and works, when they shop, whether there are children in the household, which medicines or hygiene products they buy, how much alcohol ends up in the trolley. A single receipt is trivial. Hundreds of them are a profile.",[22,62,64],{"id":63},"the-usual-way-the-photo-goes-to-the-cloud","The usual way: the photo goes to the cloud",[15,66,67],{},"With most scanner apps, it works like this: a photo is taken and sent to a server, an AI model reads the text there, and the result comes back. Technically it's the simplest approach, because large models need a lot of computing power.",[15,69,70],{},"The price: the receipt sits, at least for a while, on someone else's servers, often those of a big AI provider outside the EU. What happens to the data there depends on contracts and privacy policies that hardly anyone reads.",[22,72,74],{"id":73},"the-other-way-the-reading-happens-on-the-phone","The other way: the reading happens on the phone",[15,76,77],{},"Modern smartphones are powerful enough to recognise text right on the device. That's exactly what the scanner in Money Koi relies on. A scan goes roughly like this:",[79,80,81,87,93,99,105],"ol",{},[33,82,83,86],{},[36,84,85],{},"Find the total and date:"," The camera is pointed at the receipt. Text recognition runs live on the phone and locks in the total and date as soon as they're read reliably.",[33,88,89,92],{},[36,90,91],{},"Capture the items:"," A photo of the receipt is taken. For the big supermarket chains, hand-written parsers built for each store's receipt layout read the individual lines.",[33,94,95,98],{},[36,96,97],{},"Check the maths:"," The app adds up the items it found and compares them with the printed total. That way it's immediately clear if something is missing or was misread.",[33,100,101,104],{},[36,102,103],{},"Categorise:"," Each item is booked into one of the book's own categories, based on past corrections, a keyword table, the booking history and fuzzy matching. Correct once that \"cat litter\" belongs under \"Pets\", and the app remembers.",[33,106,107,110],{},[36,108,109],{},"Review and save:"," A review screen shows everything, and any line can be changed before a booking is created.",[15,112,113],{},"To read the receipt, the photo never leaves the device, and no outside AI service is involved. That's why scanning also works in flight mode.",[15,115,116],{},"Without an account, the booking and the photo stay on the phone, and Money Koi's server never receives them. With Cloud, Money Koi backs both up afterwards, once there's a connection again: encrypted, to its own server in the EU, so the receipt is available on every device and nothing is lost if the phone breaks. Anyone who would rather keep photos on the phone only can switch photo backup off in Settings.",[22,118,120],{"id":119},"the-austrian-advantage-the-rksv-qr-code","The Austrian advantage: the RKSV QR code",[15,122,123,124,128,129,132],{},"Anyone who shops in Austria has seen it many times: the QR code at the bottom of the receipt (or ",[125,126,127],"em",{},"Kassabon",", as Austrians call it). It comes from the Austrian cash-register rules, the ",[36,130,131],{},"Registrierkassensicherheitsverordnung (RKSV)",", which since 2017 has required receipts from cash registers to carry a signed, machine-readable code.",[15,134,135],{},"Among other things, this code contains the date and time and the amounts, broken down by VAT rate. For a scanner, that's gold: instead of reading the total off crumpled thermal paper, the app can take it straight from the QR code, without errors. Money Koi uses this code whenever it's there.",[15,137,138],{},"Germany has a similar principle with its TSE requirement for cash register systems, but a QR code isn't printed on every receipt there. And of course the scanner works without a QR code too, using text recognition instead.",[22,140,142],{"id":141},"why-the-items-matter-more-than-the-total","Why the items matter more than the total",[15,144,145,146,149],{},"Many apps only capture the total from a receipt. That saves a bit of typing, but it doesn't answer the really interesting question: ",[36,147,148],{},"what"," was the money spent on at the supermarket?",[15,151,152],{},"A €87 weekly shop might be €60 of food, €15 of toiletries and €12 of drinks. Booked as \"Groceries\" alone, the end-of-month analysis is off. With individual items, it's clear how much really goes on fruit and veg, meat, snacks or household goods, and how that changes over the months.",[22,154,156],{"id":155},"to-be-honest-what-a-scanner-cant-do","To be honest: what a scanner can't do",[15,158,159],{},"Thermal paper fades, receipts get crumpled, and every supermarket chain prints its receipts a little differently. No scanner is perfect. That's why the review step in Money Koi isn't an optional extra but a fixed part of every scan, and why the app checks the maths instead of trusting the result blindly.",[15,161,162],{},"For the big Austrian chains such as SPAR, BILLA, HOFER, LIDL and ADEG, there are dedicated parsers tuned to each store's receipt format. Other shops are handled by general text recognition. Support keeps growing, so if a regular shop causes trouble, I'd love to hear about it.",[22,164,166],{"id":165},"tips-for-better-scans","Tips for better scans",[30,168,169,175,181],{},[33,170,171,174],{},[36,172,173],{},"Good light, lay it flat:"," A receipt on the table scans better than one held in the hand.",[33,176,177,180],{},[36,178,179],{},"Scan at the checkout or the same day:"," Thermal paper fades faster than most people think, especially in a wallet.",[33,182,183,186],{},[36,184,185],{},"Keep the text sharp:"," The print should be in focus and large enough to read, especially on long receipts.",[22,188,190],{"id":189},"the-bottom-line","The bottom line",[15,192,193],{},"A receipt scanner doesn't need to send the photo to the cloud to be useful. With on-device text recognition, the RKSV QR code and a careful review step, a receipt becomes a clean, itemised booking, and shopping habits remain a private matter.",[195,196],"hr",{},[15,198,199,206,207,211,212,218,219,224],{},[200,201,203],"a",{"href":202},"/en/features",[36,204,205],{},"Money Koi"," is a budget book with a ",[200,208,210],{"href":209},"/en/scanner","receipt scanner"," that reads receipts right on the phone. The scanner is part of the free budget book, available for ",[200,213,217],{"href":214,"rel":215},"https://play.google.com/store/apps/details?id=com.psyren.moneykoi",[216],"nofollow","Android on Google Play"," with no account needed. Pro and Cloud add more; Cloud also opens the book in the browser at ",[200,220,223],{"href":221,"rel":222},"https://my.moneykoi.com",[216],"my.moneykoi.com",". iOS is planned for the end of 2026.",{"title":226,"searchDepth":227,"depth":227,"links":228},"",2,[229,230,231,232,233,234,235,236],{"id":24,"depth":227,"text":25},{"id":63,"depth":227,"text":64},{"id":73,"depth":227,"text":74},{"id":119,"depth":227,"text":120},{"id":141,"depth":227,"text":142},{"id":155,"depth":227,"text":156},{"id":165,"depth":227,"text":166},{"id":189,"depth":227,"text":190},"2026-10-18T00:00:00.000Z","Most receipt scanners send the photo to the cloud. Why that's risky for shopping receipts, and how a scan can run entirely on the phone, RKSV QR code included.","md","lucide:receipt","kassabon-scannen-ohne-cloud",[243,244,245,246,247,248],"receipt scanner app","scan receipts app","receipt scanner privacy","offline receipt scanner","RKSV QR code","digitize receipts",{},true,"/blog/en/scan-receipts-without-cloud",{"title":6,"description":238},"scan-receipts-without-cloud","blog/en/scan-receipts-without-cloud",[256,257,258],"Receipt Scanner","Privacy","Austria","6iPI2ndD6d_Vlv2O8eVoa3MEtDznIwW-6VFeP5SGVzI",6,[262,267,271],{"key":263,"slug":264,"title":265,"minutes":266},"gemeinsame-finanzen-paar","couples-money-models","Managing Money as a Couple: 3 Models That Work in Everyday Life",5,{"key":268,"slug":269,"title":270,"minutes":266},"fixkosten-check-abos-finden","fixed-costs-check","The Fixed Costs Check: How to Find Forgotten Subscriptions and Contracts",{"key":272,"slug":273,"title":274,"minutes":266},"was-kostet-der-wocheneinkauf","weekly-grocery-cost","What Does the Weekly Shop Really Cost? Here's How to Find Out",[276,278],{"code":277,"slug":241},"de",{"code":279,"slug":253},"en",1792839598231]