Android Mouse Multi-Touch
Hi,
When working with a touch screen, a touch is registered as button 1 (left button).
Ok so touch can be handled as mouse clicks. But there is one difference, with a mouse, we can't click at two or three different locations at the same time. With a touch-screen tablet, we can. Is it possible to somehow detect when there is a multi-touch ?
My subjects are children, they have to touch the screen with their right index finger but they often accidentally touch the screen with their other fingers or their left hand.
Any idea how to detect this efficiently ? When touch locations are distant and timestamps very close it's easy to know that this is a double touch. But when location are close, it's hard to differentiate if it's an index movement or a double touch.
Comments
Dear Pad, dear all,
I am very curious to know whether and how you have ever solved this issue? I would also like to use OpenSesame to program touchscreen experiments for young children, as with other software we always had difficulties with accidental use of multitouch functions. For me, it would be ok if the software only registered one touch (say the first one), even if that adds noise to the data, but I don't want the display to change (when programming with PyGame a few years ago, my Windows surface always showed a lock symbol when children touched multiple times, which they found very confusing).
Best,
Katrin