Vilnius mayor Arturas Zuokas intends to install a huge screen on the town hall to broadcast a real-time "happiness barometer" that will monitor the mood of the Lithuanian capital.
The display will monitor the level of happiness among the city's 520,000 residents by showing a number on the scale of one to 10 that reflects tabulated votes sent by people via their mobile phones and computers.
The system is already set up and on televisions in the lobby of the municipal office.
"This barometer is a great tool for politicians. If we take a decision and see a sharp fall in the mood of the city, then we know we have done something horribly wrong," Mr Zuokas said.
This week the barometer has been hovering around six to seven points.
Lithuania was hit hard by the 2008-2009 financial crisis.