| Room Identification | Office, classroom, meeting room, or hotel room entrance | Flat wall-mounted plaque | Aluminum, acrylic, PVC, or engraved plastic | Short room name, strong contrast, matte finish, and clear text hierarchy | Medium–High | High | Permanent indoor wayfinding |
| Restroom Identification | Restroom door or adjacent wall near a corridor | Icon-and-text sign | Rigid plastic, aluminum, or laminated board | Use universally recognizable pictograms, high contrast, and easy-to-clean surfaces | High | High | Public buildings, workplaces, schools, and hospitality venues |
| Accessibility Identification | Accessible restroom, lift lobby, or accessible service room | Tactile and Braille sign | Rigid acrylic, aluminum, or durable plastic | Include raised characters, Braille, adequate contrast, and a non-glare finish | High | High | Facilities serving people with visual or mobility needs |
| Safety Warning | Mechanical room, electrical room, chemical storage, or restricted area | Warning or hazard sign | Aluminum, rigid PVC, or weather-resistant composite | Use a concise warning message, standardized safety colors, symbol support, and durable printing | Very High | Very High | Areas with electrical, chemical, mechanical, or physical hazards |
| Fire Safety | Fire exit, fire equipment cabinet, or emergency route door | Photoluminescent or high-visibility safety sign | Photoluminescent plastic, aluminum, or rigid board | Use clear emergency symbols, strong contrast, directional arrows where needed, and low-light visibility | Very High | Very High | Emergency exits and fire-response equipment locations |
| Privacy Control | Conference room, examination room, restroom, or treatment room | Sliding, rotating, or reversible sign | Aluminum, acrylic, or durable plastic | Show simple status messages such as “Occupied” and “Available”; ensure smooth operation | High | Medium | Rooms that frequently change between available and occupied |
| Temporary Information | Construction area, temporary office, event room, or short-term workspace | Removable adhesive sign or hanging insert | Paper insert, laminated card, corrugated plastic, or removable vinyl | Prioritize fast replacement, clean removal, readable type, and low installation effort | Low–Medium | Medium–High | Short-term layouts, renovations, and changing room assignments |
| Restricted Access | Server room, staff-only entrance, storage room, or management area | Wall plaque or door-mounted notice | Aluminum, acrylic, or laminated plastic | Use direct wording such as “Authorized Personnel Only” and maintain strong contrast | High | High | Controlling access to private or operational areas |
| Outdoor Identification | Exterior entrance, gate, service door, or detached building | Exterior-grade plaque or projecting sign | Powder-coated aluminum, stainless steel, exterior acrylic, or UV-resistant composite | Use weather-resistant finishes, corrosion-resistant fixings, UV-stable graphics, and adequate viewing distance | Very High | High | Exposed entrances and outdoor directional points |
| Directional Guidance | Corridor intersections, stairwell doors, elevator lobbies, or large facilities | Arrow sign, projecting sign, or wall-mounted directional panel | Aluminum, acrylic, PVC, or laminated board | Use arrows consistently, limit wording, maintain visual continuity, and position signs at decision points | High | Very High | Hospitals, campuses, offices, public buildings, and large venues |