Electronic voting in Brazil

The primary design goal of the voting machine (Portuguese: urna eletrônica) is extreme simplicity, the model being a public phone booth.

[This paragraph needs citation(s)] The original operating system was VirtuOS,[2] similar to DOS and includes multitasking support, was developed by Microbase.

In 2008, under initiative from the TSE Electronic voting team migrated to a Linux (dubbed UEnux) OS to reduce costs and take full control of development cycle.

If the audit failed to produce a positive result (the matching of the votes counted to the sum of the instructions), then the whole election in the State in question would be void.

The Brazilian Superior Electoral Court (TSE) regularly promotes an event called Public Safety Test (PST).

[10][11] The source code to the voting software is closed to the general public, but periodically open for inspection to some entities, universities and to all political parties.

[13][14] A new biometrics-based voting machine, with an additional apparatus that does the voter's fingerprint recognition before allowing the ballot to be cast, started being used in 2012.

[16] For the 2020 Brazilian municipal elections, biometric use was suspended due to the COVID-19 pandemic, in order to avoid touch points for voters and to reduce lines.