title: [QR-Code-what is that?].
authors.forename: T
authors.initials: T
authors.lastname: Albrecht
authors.forename: P K
authors.initials: PK
authors.lastname: Plinkert
mesh_terms: D040421:Cell Phone; D034201:Computers, Handheld; D044962:Data Compression / Q000379:methods*; D001330:Electronic Data Processing / Q000379:methods*; D020407:Internet; D012815:Signal Processing, Computer-Assisted; D017216:Telemedicine / Q000379:methods*; D014584:User-Computer Interface