Method for determining in a 2nd device or application whether or not audio content received via an acoustic path from a 1st device or application has been stopped or is paused, wherein said audio content was targeted to be watermarked, said method including: - carrying out (13, 14) in said 2nd device or application a watermark symbol detection in the received audio content and a related detection strength value determination; - in case no watermark symbol has been detected: -- comparing a received expected detection strength value with a received detection strength threshold value; -- if said expected detection strength value is greater than said detection strength threshold value, deciding that content has been stopped in the 1st screen device; -- if said received expected detection strength value is not greater than said detection strength threshold value, deciding that content has not been stopped in the 1st screen device, and again carrying out (13, 14) said watermark symbol detection and said related detection strength value determination; - in case a watermark symbol has been detected: -- comparing said determined detection strength value with said expected detection strength value and calculating therefrom a correspondingly updated detection strength threshold value which replaces said received detection strength threshold value; -- deciding that content has not been stopped in the 1st screen device, and again carrying out (13, 14) said watermark symbol detection and said related detection strength value determination. - carrying out (13, 14) in said 2nd device or application a watermark symbol detection in the received audio content and a related detection strength value determination; - in case no watermark symbol has been detected: -- comparing a received expected detection strength value with a received detection strength threshold value; -- if said expected detection strength value is greater than said detection strength threshold value, deciding that content has been stopped in the 1st screen device; -- if said received expected detection strength value is not greater than said detection strength threshold value, deciding that content has not been stopped in the 1st screen device, and again carrying out (13, 14) said watermark symbol detection and said related detection strength value determination; -- comparing a received expected detection strength value with a received detection strength threshold value; -- if said expected detection strength value is greater than said detection strength threshold value, deciding that content has been stopped in the 1st screen device; -- if said received expected detection strength value is not greater than said detection strength threshold value, deciding that content has not been stopped in the 1st screen device, and again carrying out (13, 14) said watermark symbol detection and said related detection strength value determination; - in case a watermark symbol has been detected: -- comparing said determined detection strength value with said expected detection strength value and calculating therefrom a correspondingly updated detection strength threshold value which replaces said received detection strength threshold value; -- deciding that content has not been stopped in the 1st screen device, and again carrying out (13, 14) said watermark symbol detection and said related detection strength value determination. -- comparing said determined detection strength value with said expected detection strength value and calculating therefrom a correspondingly updated detection strength threshold value which replaces said received detection strength threshold value; -- deciding that content has not been stopped in the 1st screen device, and again carrying out (13, 14) said watermark symbol detection and said related detection strength value determination.