Persona: Host (At Physical Drop-off Point) — Face-to-face with guest at the storage location, possibly using a tablet. Screen used in real-world conditions — all interactive elements are large and touch-friendly. SRS §6.2 Host Journey; §7.7 FR-26

Step Progress Indicator — 5-step horizontal checklist: 1 Verify Code / 2 Guest ID / 3 Prohibited Items / 4 Bag Count / 5 Photos & Confirm. Back allowed; forward requires completing current step. Cannot skip. SRS §7.7 FR-26

Step 1 — OTP / Booking Code Entry — Large text input for guest's drop-off code. On match: green success with guest name. On mismatch: error + remaining attempts counter. Rate limiting: 5 max attempts before lockout (FR-66). SRS §7.7 FR-26; §8.4 FR-66

Step 2 — Guest Government ID Verification — ID Type dropdown + ID Number + front/back photo upload. Images go to S3/GCS (FR-93). Annotation: guest KYC done by host at drop-off, NOT at account registration (§5 Assumptions). SRS §7.7 FR-26; §5 Assumptions; §9.2 FR-93

Step 3 — Prohibited Items Check — Listing's prohibited items shown above mandatory checkbox. 'Refuse Drop-off' alternate CTA if prohibited items found. SRS §7.7 FR-26; §9.4 FR-103; §5 Assumptions

Step 4 — Bag Count Confirmation — Three steppers: Small / Regular / Large. Pre-filled from guest booking (shown as reference). Host adjusts if actual bags differ. Discrepancy triggers a flagged note. SRS §7.7 FR-28; §7.5 FR-14

Step 5 — Luggage Photos + Condition Notes — Up to 5 photos (FR-29) + condition text. Uploaded to S3/GCS (FR-93). Creates an evidence record for potential disputes (SCR-29 resolution). SRS §7.7 FR-29; §9.2 FR-93; §7.13 FR-52

Mark as Checked-In CTA — Large orange CTA enabled only after all mandatory steps are complete. On tap: status → Checked-in / guest email sent (FR-37) / audit entry created (FR-77). SRS §7.7 FR-27; §7.9 FR-37; §8.7 FR-77