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Episode #923 Quiz

Location Tracker Behavior
Date: 2023-05-16 | Length: 1.75 hrs | Episode page at twit.tv

About this episode

SpinRite’s rewrite centralized exception handling by checkpointing the stack and resetting it through the I/O abstraction to abort hangs cleanly. The tracker specification requires rotating private Bluetooth MACs, suppressing location broadcasts near owners, motion-triggered audio alerts after 8–24 hours separated, and encrypted serial-number lookup plus law-enforcement-accessible pairing registry accountability.

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Question 1: According to the specification Steve described, when must a location-enabled accessory rotate its resolvable and private address upon changing modes?

Question 1

According to the specification Steve described, when must a location-enabled accessory rotate its resolvable and private address upon changing modes?

Only after it has remained in Separated state for 24 hours Only after motion detection has been enabled for eight hours On any transition from Near-Owner state to Separated state Only when the accessory is physically disabled by its owner

Question 2: What is the spec's required timing for enabling the motion detector on a separated accessory before it begins to detect movement?

Question 2

What is the spec's required timing for enabling the motion detector on a separated accessory before it begins to detect movement?

Exactly 30 minutes after separation, with no randomness After 24 hours, but only if the tag has not moved at all Immediately after separation, before any back-off period Between eight and 24 hours after separation, chosen randomly

Question 3: What does the specification require a non-owner device to do when it is trying to help a user physically locate an unknown accessory?

Question 3

What does the specification require a non-owner device to do when it is trying to help a user physically locate an unknown accessory?

Force the accessory into Near-Owner mode by broadcasting its current location Disable the accessory by sending a remote erase command Query the owner’s pairing registry directly over Bluetooth Play a sound on the accessory if it is in Bluetooth Low Energy range

Question 4: What was the minimum sound duration required each time the accessory plays a locating sound under the spec?

Question 4

What was the minimum sound duration required each time the accessory plays a locating sound under the spec?

Exactly two seconds per sound event At least ten seconds per sound event Only one second per sound event At least five seconds per sound event

Question 5: What information does the spec say must be recorded in the pairing registry when an accessory is paired?

Question 5

What information does the spec say must be recorded in the pairing registry when an accessory is paired?

The owner’s verifiable identity information associated with the accessory serial number The accessory’s public MAC rotation schedule The accessory’s motion-detector calibration values The accessory’s last known crowd-sourced coordinates

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