1) Here in Brazil, mostly everyone trusts the e-voting systems.
It's much much better than the paper ballots which used to end up in rampant fraud in smaller cities, since corruption is widespread. With the e-voting system, the only possible fraud is if the federal government wants to rig the elections (and does a *very* good job at it) neither the government or the opposing parties consider this an issue so, unless they're all colluding with each other (which would make the elections pointless anyway), I think it's reasonably safe. I actually worked for a year and a half in the IT dept. of the Elections Branch in my state and, with that knowledge, I trust the e-voting system.
2) No one here really cares about providing personal data to third-parties. It's common to have to provide your RG (ID card number) and CPF number (something similar to SSN) at a store, when you're making a regular purchase such as shoes or a t-shirt. When designing any sort of IT system to store clients, etc, the CPF number is usually the natural primary key.
Most people here think it's reasonable to collect fingerprints and no one cares when, for instance, the US consulate collects our fingerprints when we're getting our US Visa. Almost all our government documents (we have several: ID Card, CPF, "Voter's Card", Driver's License, Passport) have tons of personal data and fingerprints. This is a non-issue here.
3) People here care about privacy only inside their homes. For instance, everyone (including me) thinks it's a good idea to install more CCTV cameras in some areas to stop crime. In some places, crime is a much more pressing issue than expectation of privacy in a public place. "Big Brother" reality shows are the top 1 programs on public TV, so I would say the next generation might even not care about privacy in their own homes.
The rest of the world is very different from the US - just keep this in mind.