[Ohio-Talk] recommendations for keyboards to use with an iPhone

[c16a19f at sbcglobal.net]

Years ago I was at an NFB Ohio State convention and saw someone using a
qwerty keyboard with their iPhone. I remember that the keyboard folded in
half.

Does anyone have recommendations of similar small qwerty keyboards that are
compatible with an iPhone? Something that would work well and be easy to
transport?   

Thanks in advance for any info on this.

Cheryl