I was a voter in last weeks european elections, and stayed until the votes for the office were counted. (you are allowed to stay after the office closes)
Almost nothing can go wrong, and can always be detected and mostly corrected.

voters are counted, handed out votes are counted, incorrectly filled in votes are counted and marked 'invalid' and stored seperately.
received votes are counted as they are inserted in the box.
After closure, all counts are compared.
Then the box is opened, and all votes are counted and compared to previously counted.
Then votes are sorted and counted to the results and added back up to give vote count again.
All counts are written down on official paper, votes are sealed and paper and votes are brought to central counting office of city where they can be counted again the day after (first tallies are reported upstream.)

Counting is fair by having counters of several political parties and city officials at every voting office
a typical office has 5 people . 1 checking Identity, 2 counting voters/checking revoked identities, 3 counting and giving votes, 4 counting received votes, 5 extra for toilet-visits

The standard required 1 second of 'no data' before and after the +++, or does that cheap winmodem just extends(extinguish) this standard?

No, just make a milliWatt transmitter with noise on the appropriate frequency, and all vehicles in a 500 meter range will be allowed to drive faster, or just stop dead.

The german Maut-system (pay for cargo on highways) has the provision: if the system fails, you need to take the first exit of the highway and continue on secondary roads, or just park and wait until system gets restored.

1. physical access to SIM-card to get the IMSI
2. info on bank account / phone number
3. hacking in PC/internet connection to determine if/when the code is used.
4. raise no suspicion when a code is sent and not received by the original recipient, and recipient is not able to call/being called or send/receive text because the original phone will be blocked until it is paired again with the GSM-system (power cycled)
5. you need to have a bank that does have this system. (mine does not)

so not as viable as it looks.

when you quote, please quote literal, including errors.

But... you are not allowed to publish the images when a (any) person who is recognizable on the picture has any objections to such publication, and you are required to remove such pictures when requested.