Estonians can vote from anywhere in the world

Instances are not hard to find of democracies big and small the world over allowing some form of absentee voting where electors need not be present physically at a designated polling station to exercise their franchise. These solutions to enable voting utilise everything from postal services to the digital medium to make sure that citizens can make their vote count.Here are a few examples:
UNITED STATES
For federal elections, most US states allow an early voting period where voters can request for an absentee ballot. In 12 states, early voting is not allowed and an excuse is required to request an absentee ballot. All states also mail an absentee ballot to certain voters who can return the ballot by mail or in person. In 19 states, an excuse is required, while 28 states and the District of Columbia allow any qualified voter to vote absentee without offering an excuse. Three states (Oregon, Washington, Colorado) mail ballots to all eligible voters for every poll. Some states also allow voters to receive, fill out and cast their absentee ballot in person at an election office or satellite location rather than returning it through the mail

UNITED KINGDOM
Eligible voters must apply for a postal vote if they’re either away from home, or are abroad and want to vote in England, Scotland or Wales. No reason need be provided unless they’re voting in Northern Ireland. Voters can complete and return the postal vote by post. But if they are too late to post the ballot for counting they can take it to the local polling station on election day. UK also allows vote by proxy, but only if the voter is away on polling day, has a medical issue or disability, or is not able to vote in person because of work or military service
GERMANY
Eligible persons enlisted in a voters’ register do not need to supply a specific reason to vote by post. They just have to apply to the municipality of their main residence for a polling card to be issued to an address indicated. The country issues polling cards for voting in a polling booth of the constituency other than the one where a voter is registered. But it is not possible to vote in a polling booth outside one’s “own” constituency
AUSTRALIA
The country allows an absent vote, which is cast by an elector out of their home division but still within his/her home state or territory on voting day. There is also provision for early voting in person or by post under a given set of circumstances. Voters can apply for a postal vote online, or complete an application form. The country also allows interstate voting on election day by eligible electors who are not in their home state or territory. But this facility is not available for federal bypolls
ESTONIA
It introduced what it calls ‘i-Voting’, or internet voting in 2005. Voters cast their ballots from any internet-connected computer anywhere in the world. During a designated pre-voting period, the voter logs onto the system using an ID-card or mobile ID, and casts a ballot. The voter’s identity is removed from the ballot before it reaches the electoral officials for counting to ensure anonymity. To counter the possibility of votes being forced or bought, Estonia allows voters to log in and vote as many times as they want during the pre-voting period with each new vote cancelling the last
NEW ZEALAND
If one can’t get to a voting place during the voting period, s/he can still vote. For instance, if they’re in a rest home or hospital, the election commission sends teams to deliver voting services. Blind or people with certain disabilities can also use a telephone dictation service to vote. There is also the ‘takeaway vote’, for which voters need to apply for voting papers to be sent by post. The completed voting papers must be returned before a deadline on polling day