"Most of the results of using technical bugging devices were of little importance for my service. It may have been different in counter-intelligence, where bugs in flats, etc., were used to obtain a lot of information about what counter-intelligence was interested in"

This quote by Markus Wolf suggests that the use of technical bugging devices was not really successful in his service. He suggests that the outcomes of using these gadgets were not very helpful. However, he likewise recommends that the use of these devices may have been more successful in counter-intelligence, where bugs were used to obtain a great deal of details about what counter-intelligence had an interest in. This implies that the use of bugging devices was more successful in counter-intelligence than in other services. This might be since counter-intelligence was more focused on getting info, and hence was most likely to use pestering devices to do so. Overall, this quote suggests that using bugging devices was more successful in counter-intelligence than in other services.