What is Daylight Savings Time (DST)


1. Types of Pins & How DST Affects Them

    1.1 Pins That Require Manual Adjustment

    1.2 Impact

    1.3 Recommendation:


2. Pins That Automatically Adjust for DST

    2.1 Impact:


3. Other Features Affected by DST

    3.1 Impact:

    3.2 Recommendation:


4. Summary of PINs and their behavior

5. Best Practices


What is Daylight Savings Time (DST)

Daylight Saving Time (DST) is the practice of moving clocks forward by one hour in spring and back by one hour in fall to make better use of daylight. Many countries observe DST, with start and end dates varying across regions yearly.

Certain access types of on igloo smart locks will show discrepancies, and this article will be addressing them. 

1. Types of Pins & How DST Affects Them

    1.1 Pins That Require Manual Adjustment

    The following types of pins do not automatically adjust for DST and may cause access                    discrepancies:

  • Weekly Custom Pins

  • Weekly AlgoPIN™

    1.2 Impact

  • Lock access times may be off by one hour after DST starts or ends. Some time zones may differ more than one hour.

  • Users may experience early or delayed access depending on their local DST rules.

    1.3 Recommendation:

  • Create new Weekly PINs after the DST transition to ensure they sync with the new time.

2. Pins That Automatically Adjust for DST

The following access types consider DST and adjust accordingly when generated, for both custom and AlgoPIN™ types:

  • One-Time Passwords (OTP)

  • Duration-Based Pins

  • Permanent Pins

    2.1 Impact:

  • No manual adjustment is needed.

  • These pins will align with the correct local time.

3. Other Features Affected by DST

  • Night Mode & Schedule Features: These features are exclusive to our retrofit lock (SKU: OE1).

    3.1 Impact:

  • Lock access times may be off by one hour after DST starts or ends.

  • Users may experience early or delayed access depending on their local DST rules.

    3.2 Recommendation:

  • Reset Night Mode & Schedule Features by turning them on and off, after the DST transition to ensure they sync with the new time.

  • Double-check access schedules within the app to confirm the correct timing.

4. Summary of PINs and their behavior


PIN type

Affected by DST

Action required


Weekly Custom PINs

✅ Yes

Reset manually after DST kicks in to re-sync time


Weekly AlgoPIN

✅ Yes

Reset manually after DST kicks in to re-sync time

Custom/ AlgoPIN™

OTP (One-Time Passwords)

❌ No


⏳ Adjusts automatically when generated

Custom/ AlgoPIN™

Duration-Based Pins

❌ No


⏳ Adjusts automatically when generated


Custom/ AlgoPIN™

Permanent Pins

❌ No


⏳ Adjusts automatically when generated




5. Best Practices

Here are some recommendations to assist in the transition in and out of the DST period.

  1. Be aware of DST changes in your region and prepare accordingly.

  2. Manually reset weekly custom and algorithm-based pins to avoid access discrepancies. 

  3. Verify scheduled access times in the app after the DST transition.




If you have further questions, please refer to our support resources or reach out to support@igloohome.co