Servers can be buzzed by patrons on a new wristband for quicker service, but some are concerned the devices invite sexual harassment.

The Canadian Brewhouse in Calgary is one of five locations in Canada that are testing the new system with an eye to improving customer service.

"The whole big picture of it is so we're more efficient on the floor just being able to work a lot closer in communication with each other a lot more, it's awesome," said Rob Garraway, The Canadian Brewhouse.

Patrons can press three buttons, one to call a server, one to ask for the cheque and a cancel button.  Some patrons are saying it works pretty well.

"I like it because sometimes you wait a long time for the bill but now like you know if you're ready or in a rush you can ask for it early," said Renee Pedersen, customer.

But some servers say the new system is presenting challenges for them, with some patrons abusing the call button to flirt with servers.

"I've made fun out of it,” said Jacalyne Exner, server. “I just tell people if you keep pressing the button I’m going to keep bringing you a round, it's going to be on your bill so it's your choice."

But critics say it’s more than just a nuisance, its implied approval of the harassment.

“There is certainly a potential that providing someone with a button that they can press and letting them know that gives them direct access to another person’s body can really increase a sense of control, and dare I even say even a sense of ownership unfortunately that a person can feel over someone else,” said Maki Motapanyane, Mount Royal University.

The Canadian Brewhouse has been running this trial for nearly a month and management said there haven't been any problems and plans to keep the device indefinitely.