I'm not a fan of SMART Boards™ for a few reasons, not the least of which is my left-handedness.

Left-handers push words when we write. It's not a natural motion, and the SMART Board™ takes southpaws back to the fountain pen days, when our hand would smudge the not-quite-dry ink.

When I write on a SMART Board™, my hand blocks the light. As I continue, my wrist, then my forearm block the light.

Many left-handers can write backwards, though most may be unaware of this. If you're lefty, try it for a few minutes. You may amaze yourself more than you already do.

Some of us can write backwards faster than forwards. I occasionally took notes in medical school backwards, then reverse the paper and hold it up to a light to read it.

So here's my idea for a new assistive technology--program the SMART Board to flip my witing into its mirror image as I write!

Take that, Sister Mary Barbara!

Other reasons I don't like SMART Boards™:

That lag (try drawing lots of dots in a diffusion lesson
Hogs up my whiteboard space
The culture (All caps? Really? How precious....)
Expensive

I secretly take it down for some periods...lots of glorious whiteboard underneath!

Drawing by DaVinci--I tweeted him, but he never wrote back....