Hearts claimed a point against Edinburgh rivals Hibernian in controversial circumstances when the home side had a perfectly good goal disallowed during the goalless draw at Easter Road.
A Leigh Griffiths free-kick in the second half was well over the line but the goal was not given by the match officials.
The International Football Association Board - the body that approved the use of goalline technology in the game last year - met in Edinburgh only last weekend to discuss how the various licensed systems might be implemented.
The visitors had the best of the chances early on and Arvydas Novikovas slipped a neat pass through to John Sutton but goalkeeper Ben Williams raced off his line to clear before he could shoot. Michael Ngoo was also proving to be a handful in front of goal and his flick was cleared off the line by Lewis Stevenson before Fraser Mullen's rebound shot was blocked.
Hibs had enjoyed a decent amount of possession without posing too many problems in the final third. But they had the chance to pile on the pressure when Jorge Claros punted a free-kick into the box and Jamie MacDonald was alert to prevent a Matt Done effort from finding the net.
Hearts made an enforced change with half-time approaching. Mullen had received treatment for a foot injury and he was forced out of the action after 37 minutes, allowing Brad McKay to make his debut.
Ngoo carved out a half-chance shortly after the restart with a shot from the left that fell across the face of goal and trundled past the upright. A lovely volley from Andy Webster could have sparked the game into life but he was denied by an impressive save from Williams.
Callum Tapping then claimed for a penalty after going down in the box under pressure from Alan Maybury but his pleas were ignored by referee Euan Norris.
Griffiths should have claimed the decisive goal after 77 minutes when his ferocious free-kick hit the underside of the crossbar and bounced easily a foot over the line before bouncing back into play. But the far-side assistant failed to spot the ball crossing the line and no goal was given.
The home fans did at least have something to cheer about when Kevin Thomson, who sealed his return to Hibs on Friday, was thrown into the action with five minutes to go.