Õ: kõnekeelne "lugeja" selles tähenduses
on tehnilises tekstis eksitav

olemus
(a) liik sisendseadmeid
Wiktionary:
7. any device that reads something;
a card reader, a microfilm reader

ISO 19005:
functional unit that is used for the acquisition or interpretation of data from a storage device, from a data medium, or from another source

näiteid:
- perfolindiriider
http://www.wimb.net/sec_slosyn/img57/trp125.jpg
- perfokaardiriider
https://duckduckgo.com/?q=punched+card+reader&t=h_&iar=images&iax=images&ia=images
- vöötkoodiriider
https://vignette3.wikia.nocookie.net/migs9e/images/7/78/Bar_code_Reader.jpg/revision/latest?cb=20150608003222
- ruutkoodiriider
https://duckduckgo.com/?t=h_&q=QR-reader&iax=images&ia=images
- kiipkaardiriider
http://downloads.acs.com.hk/product-website/367-pwbg-acm38y-565x540.png
- dokumendiriiderid
https://duckduckgo.com/?q=document+reader&t=h_&iax=images&ia=images
- RFID-riider
https://duckduckgo.com/?q=rfid+reader&t=h_&iar=images&iax=images&ia=images

(b) sisestav või esitav programm, ISO 24517 jm:
software application that is able to read and process files
https://www.g2.com/categories/file-reader/free