Tag: Technical
vCard 3.0 vs. MeCard in 2026: Which Format for Digital Business Cards?
vCard 3.0 carries photos and rich fields; MeCard stays small and scans fast. A 2026 field-by-field comparison for digital business card QR codes.
QR Error Correction Levels: When to Use L, M, Q, or H
Pick the right QR error correction level. L, M, Q, H explained with real recommendations for screens, print, industrial labels, and logo-embedded codes.