Goal line technology has been confirmed for the upcoming Aberdeen v Celtic and Hearts v Hibs matches at Hampden this weekend.
The four sides will compete for a spot in the Scottish Cup final less than a week before Christmas in semi-final action. Hearts play the Edinburgh derby with Hibs on Saturday before Aberdeen face holders Celtic on Sunday.
There will be a Scottish football first over the two games.
Goal line technology will be in operation in a domestic match on Scottish soil for the first time after the SFA teamed up with Hawk-Eye.
It will also be used during the showpiece final in December. Goal line technology was first tested in 2011 by FIFA and approved by the IFAB in 2012, featuring in several major competitions since.
Hawk-Eye technology should make derby referee Willie Collum and Aberdeen v Celtic whistler Don Robertson’s lives much easier, should any potential calls in front of goal need specialist treatment.