Smartphone
Smartphones are very suitable for use as simple eye-trackers due to their availability and low weight.
Android
With the “Look-to-Speak" app, text blocks can be selected with the eye and played back as voice output. © Google
If you have an Android smartphone, you can try out the free "Look-to-Speak" app; an app where predefined texts are selected by looking left and right and played back as voice output. The app can be downloaded from the Google Play Store. There is also a short instruction manual as PDF.
iPhone
If you have an iPhone with iOS18, you can now also activate the eye-tracking function and use it to operate your smartphone. How to activate this function and which models support iOS18 can be found on the Apple website.