GPS

It’s also essential for hikers to have a high-quality GPS or map to ensure they do not veer off trail.

Still, it’s impossible to jump-start any suspense when the couple’s all-powerful GPS knows best.

Other teams adopt different tracking methods, with Wales using Vodafone's Connect app which has GPS trackers - placed in the players' shirts - combined with data collected on their performance, menstrual cycle phases and mental and physical wellbeing.

Digitisation has brought other risks, too, including GPS jamming and "spoofing".

Other examples of GPS targeting in the Baltic Sea have been blamed on Russia.