Walk right along the street. Each shop opens when you reach its door. Cross the shop to the back wall and paste your poster there.
Staff see along the pale wedge in front of them. If it turns hatched red, they are noticing you. If it fills red, you are caught.
← → or A D move. Hold ↓ / S to crouch-walk; stand still behind a shelf or rack to tuck away, or beside a pillar to press flat. Hidden, nobody sees you.
SHIFT / SPACE dash: fast, but loud in a wedge. On a phone use the buttons on screen.
Light is the danger. Crouched in the dark you are hard to spot. Crouching close under a wedge slips beneath it. Upright, never walk into anyone.