this from india. possibly a precursor to what we will see:
[link to www.rediff.com
Election Commission to use Census data, GPS to track voters
In an attempt to curb bogus voting and monitor the migration of voters across India, the Election Commission is planning to link the Census data of 2011 with its electoral rolls. The EC then plans to use global positioning system to automatically record the voters' migration or shifting of residence.
A software, developed for this specific purpose, will be demonstrated to the Election Commission by the Registrar General of India at the Nirvachan Sadan.
Once the Census data is made available to the Election Commission, it will be clubbed with the electoral rolls. The GPS chip would be added to the electronic photo identity cards already issued to the voters.
The identity card will enable the Election Commission to record the movement of voters and pinpoint their location at the time of polling.
The ID will also detect bogus voters, said Commission sources said.
The GPS will also cut down the time taken in revising electoral rolls, as it will provide automatic updates on the basis of the voter's location, the sources said.
The RGI, which carries out the Census every decade, agreed to make the necessary changes in the software to facilitate its data's link-up with the electoral rolls.
According to sources, this data would be useful for the timely demarcation and delimitation of constituencies.