
I think they are referring to using a lead attached to your waist so u can be aware what the dog is doing or needing and work on training be it house training or anything else. I've seen it suggested a number of times by trainers .no idea how easy it helpful it is . Can't say I've heard it called that though. Totally guessing but was the article from the us ? Terminology being very different as can training methods
I also know people who attach a short lead to the collar but not attached to them so if they need the dog to come to them or go outside for example it's easier to guide them. Grabbing by the collar or neck suddenly if u think dog needs to be outside not being the best of course
Can't say I've used any of this but others may explain better . I keep mine in a an area of the house where if accidents happen it's easy to clean and also easy access to outside.it also allows them to get used to the new environment step by step and supervised in my house it's the kitchen as me and the family seem to spend a lot of the day in there