Comment by HappMacDonald

No I couldn't make it out even scaled up. I'd see a square, or three dots, and even relying upon context of other nearby letters I could reasonably well recognize there's no way to see if that's an [a, e, s, o, n, m] or what.

At this pixel scale I say just blat brail onto the screen and give people one more reason to learn that already well established and unambiguous writing system.