##### Question A hotel that previously used traditional metal keys wants to switch to electronic keycards. Explain the strategic and customer-driven reasons for replacing metal keys with keycards. Address benefits for guests, hotel staff, and the business. Define the must-have features of the end-to-end solution (e.g., check-in experience, lost-card flow, access controls, auditing, integration with loyalty or mobile apps). Describe a high-level system architecture that links keycards, door locks, on-premise or cloud servers, and hotel management software. Include how the card and lock validate each other. Propose security measures to reduce both physical and network-based attacks (e.g., brute-force entry, card cloning, packet interception). ##### Hints Think about operational efficiency (e.g., self-service kiosks, faster room turnover). Consider cryptographic approaches (public/private keys, rolling codes, time-bound credentials). Address failure modes: power outage, server downtime, or a card being swiped multiple times.

This question evaluates a product manager's ability to integrate strategic product decision-making with systems thinking, covering stakeholder impact, operational efficiency, access controls, integrations, auditing, and security considerations.

How do I approach Product / Decision Making interview questions?

Product / Decision Making questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master product / decision making interviews.

What difficulty level is this interview question?

This is a medium difficulty Product / Decision Making question, commonly asked during Onsite rounds at Amazon.

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This question is commonly asked for Product Manager candidates at Amazon during technical interviews.

Hotel Keycard System Design | Amazon Interview Question

Replace Metal Keys with Electronic Keycards

Context

A hotel that currently uses traditional metal keys plans to migrate to electronic keycards across guest rooms and staff-accessible areas.

Tasks

Explain the strategic and customer-driven reasons for replacing metal keys with keycards. Address benefits for:
- Guests
- Hotel staff (front desk, housekeeping, maintenance)
- The business (operations, risk, revenue)
Define the must-have features of the end-to-end solution, including (but not limited to):
- Check-in/check-out experience (front desk, kiosk, mobile)
- Lost-card flow and revocation
- Access controls and roles (guest, staff, shared facilities)
- Auditing and reporting
- Integrations (PMS, loyalty, mobile app)
Describe a high-level system architecture connecting keycards, door locks, on-premise or cloud services, and hotel management software. Include how the card and lock validate each other.
Propose security measures to mitigate physical and network-based attacks (e.g., brute-force entry, card cloning, packet interception).

Hints

Consider operational efficiency: self-service kiosks, faster room turnover, automated role-based access.
Consider cryptographic approaches: public/private keys, diversified symmetric keys, rolling codes, time-bound credentials.
Address failure modes: power outage, server downtime, battery depletion, or a card being swiped multiple times.

Tasks

Explain the strategic and customer-driven reasons for replacing metal keys with keycards. Address benefits for:

Guests
Hotel staff (front desk, housekeeping, maintenance)
The business (operations, risk, revenue)

Define the must-have features of the end-to-end solution, including (but not limited to):

Check-in/check-out experience (front desk, kiosk, mobile)
Lost-card flow and revocation
Access controls and roles (guest, staff, shared facilities)
Auditing and reporting
Integrations (PMS, loyalty, mobile app)

Describe a high-level system architecture connecting keycards, door locks, on-premise or cloud services, and hotel management software. Include how the card and lock validate each other.

Propose security measures to mitigate physical and network-based attacks (e.g., brute-force entry, card cloning, packet interception).

Hints

Consider operational efficiency: self-service kiosks, faster room turnover, automated role-based access.

Consider cryptographic approaches: public/private keys, diversified symmetric keys, rolling codes, time-bound credentials.

Address failure modes: power outage, server downtime, battery depletion, or a card being swiped multiple times.

Hotel Keycard System Design

Quick Overview

Replace Metal Keys with Electronic Keycards

Context

Tasks

Hints

Solution

Comments (0)

Hotel Keycard System Design

Quick Overview

Replace Metal Keys with Electronic Keycards

Context

Tasks

Hints

Solution

Comments (0)