Distance-Dependent Barcodes for Context-Aware Mobile Applications

Roope Palomäki, Maria Montoya Freire, Mario Di Francesco

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

53 Downloads (Pure)


This article introduces the novel concept of distance-dependent barcodes, which provide users with different data based on their scanning distance. These barcodes employ color blending as the key technique to achieve distance-dependence. A simple yet robust encoding scheme is devised accordingly to distinguish between near and far users. Through several experimental results, the proposed technique is shown to be effective (in terms of clear separation between near and far scanners), reliable (as to successful scans), and practical (it can be used in off-the-shelf smartphones). A few representative use cases are then presented to establish distance-dependent barcodes as an enabling technology for context-aware mobile applications. They include casual interactions with public displays, where the role of users is determined based on their distance from a screen, and augmented reality in retail, where distance-dependent barcodes provide information on available goods with different granularities. Finally, distance-dependent barcodes are shown to be user-friendly and effective through a user study.
Original languageEnglish
Title of host publicationConference Proceedings - 22nd International Conference on Human-Computer Interaction with Mobile Devices and Services
Subtitle of host publicationExpanding the Horizon of Mobile Interaction, MobileHCI 2020
Number of pages11
ISBN (Electronic)978-1-4503-7516-0
Publication statusPublished - 5 Oct 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Human-Computer Interaction with Mobile Devices and Services - Oldenburg, Germany
Duration: 5 Oct 20209 Oct 2020
Conference number: 22


ConferenceInternational Conference on Human-Computer Interaction with Mobile Devices and Services
Abbreviated titleMobileHCI


Dive into the research topics of 'Distance-Dependent Barcodes for Context-Aware Mobile Applications'. Together they form a unique fingerprint.

Cite this