I wonder if the various versions of the Optaconwould have different success rates in reading Iphone displays. On the standard r1d we have the standard mode and also invert. With the Optacon II we have three choices of mode. We also have the CRT lens on both thr r1d and the Optacon II. If this Screen Curtain is something that can be toggled on and off, this is another set of combinations. Besides all those, the CRT lens has a light shield which can also be in place or removed. As Iphone users succeed or fail reading various screens, it would be good to keep track of exactly how the Optacon was being used at the time. Is this Screen Curtain common to other devices? I had not come across the term before. Catherine ------------------------------------------------------------------------------ -Catherine Thomas braille@xxxxxxxxx / ------------------------------------------------------------------------------- to view the list archives, go to: www.freelists.org/archives/optacon-l To unsubscribe at any time, just send a message to: optacon-l-request@xxxxxxxxxxxxx with the word "unsubscribe" (without the quotes) in the message subject. Tell your friends about the list. They can subscribe by sending a message to: optacon-l-request@xxxxxxxxxxxxx with the word "subscribe" (without the quotes) in the message subject.