Digital cameras and cellphones are to be banned from polling stations in Swaziland's national election in a bid to clamp down on voter corruption.

The Swazi Elections and Boundaries Commission (EBC) said it was a common trick at election time for voters to take a photograph of their ballot paper to later prove to a candidate they had voted for them as promised.

In return the candidate paid them.

Local media in Swaziland reported Chief Gija, Chair of the EBC, said police would be on the lookout for voters who take electronic gadgets to voting booths.

The date of the election has yet to be announced by King Mswati III, who rules the kingdom as sub-Saharan Africa's last absolute monarch.