Experiments on blindfolded and blind candidates show that Fitts' Law can be effectively applied for blind users using a vibrating touch-screen under certain parameters (i.e., when varying target distance and size), while it is not verified under others (i.e., when varying the angle of attack).
My grandmother's out-of-touch outlook and outdated parameters for success have no doubt informed my own ideas about love and self-worth, however subconscious they might be.
Fixed sensitivity parameter values and inverted the relationship between touch sensitivity preference and synclient parameter value.
A quantitative evaluation of the following parameters was performed: Touch Duration (TD), Inter Tapping Interval ITII) and Number of Errors (NE).
The largest reported SIQR differences (FM minus RA/SLE) were seen for the parameters "tenderness to touch," "difficulty cleaning floors" and "discomfort on sitting for 45 minutes".
Within the two latency and frequency variables, these four parameters (proximity, approach, touch, manipulation) were highly correlated, using the intra-class correlation coefficient (above 0.7, p < 0.05) to test for consistency between parameters.
Damaraju et al. [3] introduced Multi-Tap Sliders, an innovative interface using a multi-touch screen to control different parameters in image editing software.
The claim is essentially for simulating accelerative and decelerative friction on an object based on input from a touch-sensitive display, plus some parameters for allowing it to handle this or that type of non-ideal gesture.
Then, we introduce an experimental framework titled FittsEVAL studying the ability of blind users to tap specific shapes on a touch-screen, while varying different parameters, namely: target distance, target size, and the angle of attack of the pointing task.
Plug it in, power it up, set a few parameters from a touch-tone phone, and then make a regular phone call to someone who also has an Aplio connected and properly configured at her end.
