On 18/04/14 00:39, Luke wrote: > It's extremely easy to get gmail accounts in bulk. > https://duckduckgo.com/html/?q=pva+gmail+bulk Hmmm. 2000 accounts for $299 on the first hit (granted apparently a premium service). Compare that to CAPTCHAs: ~ $3 for 1000 last I looked, maybe less now. "PVA" means verified with a unique phone number.
So it is a much more meaningful protection than a CAPTCHA, though still utterly inadequate. Verifying with a phone number automatically via your own central server would be less costly to beat - but more specialised, so more costly / higher capital cost in the short run. On that basis blinded gmail accounts seem like the best option... Unless OpenIdent has something better? I remain skeptical of using passport scans or fingerprint scans to cheaply uniqueify people - and it's likely to be even less user-acceptable than a gmail account.
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