Evidence map›Paper›PMID 39866849›Full record

ArticleACM transactions on accessible computing2024

All the Way There and Back: Inertial-Based, Phone-in-Pocket Indoor Wayfinding and Backtracking Apps for Blind Travelers.

Chia Hsuan Tsai, Fatemeh Elyasi, Peng Ren, Roberto Manduchi

Abstract read
In one paragraph

Article in ACM transactions on accessible computing, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed.

  1. Article
  2. PALMS+: Modular Image-Based Floor Plan Localization Leveraging Depth Foundation Model.IEEE Winter Conference on Applications of Computer Vision. IEEE Winter Conference on Applications of Computer Vision · 2026
    Article
  3. NavGraph: Enhancing Blind Travelers' Navigation Experience and Safety.Proceedings of the ACM on interactive, mobile, wearable and ubiquitous technologies · 2025
    Article
  4. Robust Indoor Pedestrian Backtracking Using Magnetic Signatures and Inertial Data.International Conference on Indoor Positioning and Indoor Navigation : [proceedings]. International Conference on Indoor Positioning and Indoor Navigation · 2024
    Article
  5. PALMS: Plane-based Accessible Indoor Localization Using Mobile Smartphones.International Conference on Indoor Positioning and Indoor Navigation : [proceedings]. International Conference on Indoor Positioning and Indoor Navigation · 2024
    Article
  6. Step Length Estimation for Blind Walkers.Computers helping people with special needs : ... International Conference, ICCHP ... : proceedings. International Conference on Computers Helping People with Special Needs · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Chia Hsuan TsaiUniversity of California, Santa Cruz, 1156 High Street, Santa Cruz, California, USA.
Fatemeh ElyasiUniversity of California, Santa Cruz, 1156 High Street, Santa Cruz, California, USA.
Peng RenUniversity of California, Santa Cruz, 1156 High Street, Santa Cruz, California, USA.
Roberto ManduchiUniversity of California, Santa Cruz, 1156 High Street, Santa Cruz, California, USA.

Funding

Inertial-based indoor backtracking and wayfinding aid for blind travelersR01EY029260 · NEI · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI MANDUCHI, ROBERTO · 2018 to 2021
$1.1M
NEI NIH HHS R01 EY029260
6 · The paper itself

Abstract

We describe two iOS apps designed to support blind travelers navigating in indoor building environments. The Wayfinding app provides guidance to a blind user while following a certain route. The Backtracking app records the route taken by the walker towards a certain destination, then provides guidance while re-tracing the same trajectory in the opposite direction. Our apps only use the inertial and magnetic sensors of the smartphone, and thus require no infrastructure modification (e.g., installation and support of BLE beacons). Unlike systems that use the phone's camera, users of our apps can conveniently keep their phone tucked inside their pocket, while interacting with the apps using a smartwatch. Routing directions are given via speech. Both apps were tested in a user study with seven blind participants who used them while navigating a campus building. Participants were able to successfully use the Wayfinding app to complete the prescribed paths (3 paths each), although the app had to be restarted for the first three participants in one path due to incorrect step length measurements (the app was later modified to track the users' step length). The Backtracking app worked well in most cases, although in 6 trials (out of 21) the app lost track of the participant's location.

Indexed as

mobilityorientationwayfinding

Identifiers

PMID39866849
PMCPMC11758990

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.