Physical proof-of-walk with route photos creates fascinating economic primitives:

Spatial scarcity mechanics: Routes become non-fungible locations. High-traffic areas naturally command premium rates - Times Square walk worth more than rural path. Geographic arbitrage emerges.

Verification asymmetries: Observer role creates interesting dynamics. Could split observer/walker rewards, or make observation itself a paid service with reputation systems.

Route generation as content creation: Pre-specified routes become game assets. Who creates them? Community-generated routes vs dev-curated. Route quality/difficulty ratings affect rewards.

Temporal windows: Routes expire or refresh. Weather conditions, time-of-day multipliers. Seasonal routes. Creates urgency and planning layers.

Network effects: Multiple connected routes form larger quests. Trade routes between cities. Walker-observer pairs who specialize together gain efficiency bonuses.

Anti-gaming mechanisms: Photo validation against route database. Timestamp verification. Observer reputation stakes. Distance/time checks.

The MMO framework you're reading suggests treating human participation as computational resource. Physical movement is expensive human compute - walking burns calories, takes time, requires coordination. The game economy can price this appropriately against digital resources.

Route photos create verifiable, unique digital artifacts from physical actions. Each successful walk mints a cryptographic proof of real-world movement, bridging atoms and bits naturally.

Elegant start point - elevator interior creates natural checkpoint. Unique visual signature: speckled granite walls, dark tile floor, stainless steel frame, specific button panel layout.

For route verification:

• Visual fingerprinting: Granite speckle pattern is quasi-unique, hard to fake
• Perspective constraints: Camera angle/height reveals human positioning
• Temporal markers: Elevator button states, floor indicators change
• Ambient details: Lighting, reflections provide environmental context

Route design insights:

• Indoor/controlled environments easier to verify than outdoor variables
• Architectural features create strong anchor points
• Transition spaces (elevators, lobbies, stairwells) natural for segmented proof
• Sequential constraint: can't reach next checkpoint without passing through this one

Anti-spoofing: Pre-recorded video harder when route includes interactive elements. Elevator buttons, doors opening/closing create dynamic verification layers.

Ready for next waypoint. Curious if route moves vertically (different floors) or horizontally through building spaces.

Brilliant constraint addition - no stoplight waiting eliminates temporal gaming, forces route planning around infrastructure flow.

Garden path creates seasonal verification challenge - foliage changes monthly, lighting shifts hourly. Route becomes time-sensitive asset that degrades/appreciates naturally.

Flow-state economics: Continuous movement requirement means route difficulty correlates with urban rhythm mastery. Rush hour routes worth premium.

Observer burden shifts - follower must maintain pace, can't pause for better photos. Creates authentic movement proof vs staged verification.

200m spacing suggests stamina taxation - physical cost accumulates, prevents rapid farming. Distance becomes natural rate limiter.

Elevation gain checkpoint - stairs force metabolic cost, can't be gamed with vehicles. Pergola creates shadow patterns that shift hourly, natural timestamp.

Accessibility filter - route excludes mobility-impaired participants unless alternative paths exist. Creates demographic selection pressure.

Urban infrastructure verification - distinctive architectural elements (brick pattern, concrete beams, handrail design) impossible to replicate elsewhere.

Witness positioning - observer must choose: follow up stairs or photograph from below. Each choice creates different verification signature.

Monument visible in background adds landmark triangulation for location proving.

Shadow chronometer - handrail shadows create precise time-of-day verification. Route becomes temporally locked to specific windows.

Descent hazard - stairs down require controlled movement, can't be rushed. Physical risk adds authentic cost to verification process.

Multi-level verification - elevated walkway view creates unique geometric perspective impossible to fake from street level.

Turn constraint - directional change forces spatial reasoning, prevents simple linear path optimization.

Urban canyon effect - buildings create wind/light microclimates that change route difficulty seasonally.

Geographic anchor - "Third St & Kirkland Ave" provides exact location verification. Route becomes tied to specific urban coordinates.

Underground transition - parking garage creates controlled environment, reduces weather/lighting variables for verification consistency.

Access control layer - garage entry may require payment/validation, adds economic barrier to route completion.

Elevator state verification - button calls, floor indicators, door timing create dynamic proof elements impossible to pre-record.

Infrastructure dependency - route fails if elevator breaks, creating natural scarcity/availability mechanics.

Density arbitrage - night routes exploit infrastructure availability. Peak congestion creates natural difficulty tiers and pricing.

Junction anchoring - block-level checkpoints prevent micro-optimization while maintaining verification granularity. Forces commitment to major directional choices.

One-per-block constraint eliminates photo spam gaming. Creates strategic checkpoint selection - do you photograph the safest verification point or the most unique?

Infrastructure load balancing - peak hours mean elevators/transit have queues, adding unpredictable time costs. Night runs become premium efficiency plays.

Route discovery economics - first successful completion at night establishes baseline difficulty/timing. Day attempts become higher-risk, higher-reward variants.