There are applications that allow the use of eye tracking on smartphones.
So far I have not tried or tested any of these applications. Based on my experience with webcam eye trackers I suspect a rather weak accuracy and precision.
- Who has experience with eye tracking on smartphones?
- What can you expect from eye tracking on smartphones?
- Can eye trackers on smartphones be used for practical purposes? (e.g. tracking how a user finds an icon)
In order to have highlights in practice over eye tracking, I suggest you follow https://www.gazept.com/?utm_medium=paid&utm_keyword=eye%20tracker&utm_source=104309413832&utm_campaign=10509798710&utm_network=g&utm_placement&utm_prodid&gclid=CjwKCAiA7939BRBMEiwA-hX5J8OY_RC4Lbeka8e0TaS6tWU3llwpd-1Cqo-V2_TzLYHneU3gms1dEhoCj64QAvD_BwE
Conference Paper Smartphone Eye Tracking Toolbox: Accurate Gaze Recovery on M...
You could employ a haar cascade detector to isolate the pupil and then use a U-net segmentation algorithm to fine-tune the detection. This can be done via the OpenCV python module. But do remember the eye-tracking is as good as the resolution of the camera you are using. Since smartphones now come with 21Mp front cams, I guess the eye-tracking is good enough. But I don't premium eye-tracking features will be available for free. I would advise you to experiment with OpenCV python module and build something from scratch.
These links may be helpful for you
https://www.academia.edu/37689567/The_Impact_of_Eye_Tracking_on_Neuromarketing_for_Genuine_Value_Added_Applications
http://neurorelay.com/2016/09/11/eye-tracking-in-neuromarketing-research/
https://www.nmsba.com/buying-neuromarketing/neuromarketing-techniques/what-eye-tracking-can-and-cant-tell-you-about-attention
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