Others pop up but QMC does seem to be ahead having
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Also, skeptics on twitter come with the territory and I would not place much reliance on them for fact. They don't like testing? Do they have any alternative? Do they want to catch covid19 in the stadium or on airplane?
Easy answer is they don't have to do anything, if they won't take the test.
They don't have to be persuaded. Just do it or not. They have choice.
As QMC says, We don't own your health data, you do.
I don't know about DJ, but I am impressed with what QMC has already done, gaining 2 test manufacturer clients, building infrastructure with the best parts, hyperledger sawtooth, DAML, BTP, Jumio, etc. That does not happen overnight. If others are going to compete, they have to go through what QMC has already made happen. Don't be so easily swayed by a few words on Twitter.