The Board of Directors hasn't diluted yet, but there is nothing to prevent them from issuing a corporate resolution overruling the previous one from December.
I know Eric has said on the record a number of times that they do not intend to issue more shares, but he could be forced to change his mind.
And, honestly, that is the only real risk I see with TDGI. I've invested in it and expect to double my money and that could happen even with dilution.