QR codes by surface

The only questions that matter for a physical QR code are how big, how much contrast, which error-correction level, and what will break it. Each page answers those four with numbers.

• QR codes on 3d-printed qr codesMinimum size, contrast, error-correction level and the specific failure mode for QR codes on 3d-printed qr codes.
• QR codes on banners and backdropsTwo rule sets (photo backdrops vs street banners), with sizes, error correction and the wind-ripple and grommet-distortion failure modes.
• QR codes on billboards and out-of-homeMinimum size, contrast, error-correction level and the specific failure mode for QR codes on billboards and out-of-home.
• QR codes on business cardsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on business cards.
• QR codes on coastersMinimum size, error correction and the condensation-ring failure mode for QR codes on pub and café coasters.
• QR codes on cvs and résumésMinimum size, contrast, error-correction level and the specific failure mode for QR codes on cvs and résumés.
• QR codes on digital signageMinimum size, contrast, error-correction level and the specific failure mode for QR codes on digital signage.
• QR codes on e-ink displaysMinimum size, contrast, error-correction level and the specific failure mode for QR codes on e-ink displays.
• QR codes on email signaturesMinimum size, contrast, error-correction level and the specific failure mode for QR codes on email signatures.
• QR codes on embroideryMinimum size, contrast, error-correction level and the specific failure mode for QR codes on embroidery.
• QR codes on engraved and etched metalMinimum size, contrast, error-correction level and the specific failure mode for QR codes on engraved and etched metal.
• QR codes on event ticketsScreen and print size rules, error correction, screenshot fraud and sunlight readability for QR codes on event tickets scanned at gates.
• QR codes on flyers and leafletsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on flyers and leaflets.
• QR codes on food packagingMinimum size, contrast, error-correction level and the specific failure mode for QR codes on food packaging.
• QR codes on greeting cardsMinimum size, error-correction level and the fold-line failure mode for QR codes on greeting cards, plus what a card code is actually for.
• QR codes on invitations and greeting cardsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on invitations and greeting cards.
• QR codes on laser-cut and engraved woodMinimum size, contrast, error-correction level and the specific failure mode for QR codes on laser-cut and engraved wood.
• QR codes on letterheads and stationeryMinimum size, contrast, error-correction level and the specific failure mode for QR codes on letterheads and stationery.
• QR codes on livestream overlaysMinimum size, contrast, error-correction level and the specific failure mode for QR codes on livestream overlays.
• QR codes on memorials and headstonesMinimum size, contrast, error-correction level and the specific failure mode for QR codes on memorials and headstones.
• QR codes on menus and table tentsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on menus and table tents.
• QR codes on mugs and drinkwareMinimum size, contrast, error-correction level and the specific failure mode for QR codes on mugs and drinkware.
• QR codes on name badges and lanyardsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on name badges and lanyards.
• QR codes on pet tagsVersion budget maths for a 2–3 cm disc, error correction H, engraving contrast and the privacy case for a portal URL on pet ID tags.
• QR codes on plant tags and garden markersMinimum size, contrast, error-correction level and the specific failure mode for QR codes on plant tags and garden markers.
• QR codes on postersMinimum size, contrast, error-correction level and the specific failure mode for QR codes on posters.
• QR codes on product labelsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on product labels.
• QR codes on product packaging: print specsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on product packaging.
• QR codes on receiptsModule arithmetic for 203 DPI thermal printers, minimum size, error correction and the thermal-fade failure mode for QR codes on receipts.
• QR codes on shipping labelsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on shipping labels.
• QR codes on shop windowsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on shop windows.
• QR codes on slide decks and presentationsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on slide decks and presentations.
• QR codes on stickersMinimum size, contrast, error-correction level and the specific failure mode for QR codes on stickers.
• QR codes on storefront signageMinimum size, mounting height, error-correction level and the scan-angle failure mode for QR codes on shop signs, A-frames and door decals.
• QR codes on t-shirts and apparelMinimum size, contrast, error-correction level and the specific failure mode for QR codes on t-shirts and apparel.
• QR codes on table tentsMinimum size, contrast, error-correction level and the glare failure mode for QR codes on restaurant table tents.
• QR codes on tattoosMinimum size, contrast, error-correction level and the specific failure mode for QR codes on tattoos.
• QR codes on tote bagsMinimum size, contrast, error-correction level and the fabric-drape failure mode for QR codes printed on tote bags.
• QR codes on tv and broadcastMinimum size, contrast, error-correction level and the specific failure mode for QR codes on tv and broadcast.
• QR codes on vehicle wrapsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on vehicle wraps.
• QR codes on websitesMinimum size, contrast, error-correction level and the specific failure mode for QR codes on websites.
• QR codes on wristbandsMinimum size, contrast, error-correction level and the specific failure mode for QR codes on wristbands.
• QR codes on yard signsHonest size maths for kerb-side yard signs, error correction for outdoors, coroplast UV lifetime and who actually scans them.