tag on

verb

To hover an RFID device such as a smartcard over a receiver, often with a graphical user interface, in order to make a payment or gain entry.

Opposite

Meanings

verbtag on (third-person singular simple present tags on, present participle tagging on, simple past and past participle tagged on)

present singular third person tags on · participle present tagging on · participle past tagged on · past tagged on

  1. chiefly public transportTo hover an RFID device such as a smartcard over a receiver, often with a graphical user interface, in order to make a payment or gain entry.

    Tag-on/tag-off on bus services with variable fares and transfer rebates have worked very well in Singapore.

    2006, Mike McDonald, Intelligent transport systems in Europe, page 40
    1 more example

    Contactless smart card readers can be mounted at each door of an LRT car, allowing a rider to “tag on” and “tag off” on boarding and alighting the vehicle.

    2003, Daniel Fleishman, United States. Federal Transit Administration, National Research Council (U.S.). Transportation Research Board, Fare policies, structures and technologies: update, page 39

    Synonyms: swipe, flash, tag, touch in

Synonyms & antonyms

verbTo hover an RFID device such as a smartcard over a receiver, often with a graphical user interface, in order to make a payment or gain entry.

Opposite

More synonyms by meaning

verbfix to; attach

Similar
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Spanish pasar, bipear
  • pasarsmartcard
  • bipearsmartcard
Cite this entry
APA

tag on. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/tag%20on

MLA

“tag on.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tag%20on. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “tag on,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/tag%20on.

Source: tag on on Wiktionary, CC BY-SA 4.0.