Changes

Swann, Melanie [http://www.ergonomic-solutions.net/pdf/Touch_Screen_Ergonomics_06.pdf "Ergonomics of Touch Screens"]

Syth, Tim [http://lushmind.org/galleryText/PDFs/touchingTechnologyTimSyth.pdf "Touching Technology"]

Tannen, Rob [http://www.designingforhumans.com/idsa/2009/01/ergonomics-for-interaction-designers-part-1.html "Designing *for humans" ]

Vance, Ashlee [http://www.businessweek.com/magazine/content/11_26/b4234043549730.htm "Haptics Adds New Dimensions to Touchscreens"]