I'm working on a student project for an optically responsive typeface design to be used in Adobe Indesign CS6. A little over-ambitious for my first ever type design project admittedly but I have made good progress up until this point. I now, however, have hit a complete dead end and desperately need some advice from typographic aficionados.
So far from research I understand that;
OpenType does support a 'size' tag but that this tag is not relevant to any desktop publishing software.
Adobe InDesign features a 'Automatically Use Correct Optical Size' preference, left over from the advent of Adobe MM typefaces, that never really took off as a format. But, however, will still work.