# Dynamic Adaptation of Touch Screen Target Size to Compensate for Hand Tremor

> **NIH NIH R43** · MOAI TECHNOLOGIES, LLC · 2020 · $299,270

## Abstract

Abstract
Touch screens have become ubiquitous in modern life. Smartphones, e-readers, and pad computers are the
obvious examples. There are also millions of self-service kiosks providing everything from banking, ticketing,
US Customs, and retail services. All are based on touch interaction. More than ten million Americans, and
millions more worldwide, live with Essential Tremor (ET). A significant portion of these people find it difficult, if
not impossible, to interact with touch screens. This points to the need for some innovation in touch screen
interaction paradigms to make touch screens more approachable and usable for individuals who suffer the
effects of ET. In the proposed project, we will address this need by demonstrating the feasibility of dynamically
increasing the size of touch targets on the screen in proportion to the amount of hand tremor, determined
automatically during the user's hand-pointing gesture toward the touch screen. This novel interaction paradigm
will dramatically increase the likelihood that the user will tap the desired target on the touch screen on the first
attempt.

## Key facts

- **NIH application ID:** 10009154
- **Project number:** 1R43AG066270-01A1
- **Recipient organization:** MOAI TECHNOLOGIES, LLC
- **Principal Investigator:** Olu Olofinboba
- **Activity code:** R43 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2020
- **Award amount:** $299,270
- **Award type:** 1
- **Project period:** 2020-07-15 → 2023-06-30

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10009154

## Citation

> US National Institutes of Health, RePORTER application 10009154, Dynamic Adaptation of Touch Screen Target Size to Compensate for Hand Tremor (1R43AG066270-01A1). Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/grant/nih/10009154. Licensed CC0.

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