We’re looking for that One Great Idea – big or small — from readers, and to kick things off we asked a range of interesting Torontonians for theirs.

Smart door locks now blend strong security features like biometrics, mobile apps, and multi-user access with everyday practicality.

Key companies to consider include Ring, Yale, TP-Link Tapo, Eufy and our current favourite alarm system, Simplisafe. But ...