Light quadruple dash vertical

Drawing faint lines and dividers in plain text.

Box-drawing characters let you draw tables, boxes and screens out of ordinary text. In a fixed-width (monospaced) font every character fills one cell of the same size, and these lines run to the cell edges, so they join up with their neighbours into continuous frames. Unicode gathered them from older terminal and computer character sets, in solid, heavy, three-dash and four-dash forms, so one drawing can mix strong lines with faint ones.

┊ is the thin four-dash vertical. Next to the solid │ it reads as a secondary or dotted rule: a column guide, a dashed border, an optional connection in a diagram, or a quiet separator in a text-based program.

Why do people put it in bios and posts?

As decoration: it looks like a delicate dotted thread.

In aesthetic-style text on social profiles, fan pages and post headers, people line up several ┊ side by side, often ending them with small stars or sparkles, to make hanging dotted threads or a soft frame around a name. It is style, not code: it means nothing beyond looking neat. Because each phone and app draws it with its own font, the dashes can look longer, shorter or slightly different from one screen to the next.