“The collar has four common purposes, Master,” she said, “First, it vi
“The collar has four common purposes, Master,” she said, “First, it visibly designates me as a slave, as a brand might not, should it be covered by clothing. Second, it impresses my slavery upon me. Thirdly, it identifies me to my Master. Fourthly - fourthly -” “Fourthly?” he asked. “Fourthly,” she said, “it makes it easier to leash me.” —Explorers of Gor, 5:80-81 -- source link