Since its introduction, approximately 15 years ago, the Implantable Loop Recorder (ILR) has become the reference tool for the diagnosis of unexplained syncope. Syncope is a major public health concern as, in a lifetime, between 40 and 50% of the general population suffer ≥1 episode(s), which account for 1 to 6% of all hospitalisations. While a thorough history and physical examination can ascertain the diagnosis in the majority of patients who present with neurocardiogenic syncope, the yield of conventional diagnostic investigations is far lower in the case of syncope of cardiac origin. While a correlation between symptoms and electrocardiographic recordings is the gold standard, it remains difficult to confirm with traditional monitoring methods because of the sporadicity of the disease manifestations