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The video tutorial explains the concept of MAC addresses as unique identifiers for devices, contrasting them with IP addresses. It highlights the privacy implications of MAC addresses, which are often hardcoded and unchangeable, making them useful for tracking. The video also discusses Google's restrictions on MAC address access and TikTok's violation of these rules by secretly collecting MAC addresses for 18 months, using encryption to conceal its actions.

What is a key characteristic of a MAC address compared to an IP address?

• It is used for routing data.

• It is unique and does not change.

• It is assigned by the user.

• It can be easily changed.

What action did Google take in 2015 regarding MAC addresses?

• Allowed all developers to access them.

• Restricted access to third-party developers.

• Made them public for advertising.

• Removed them from Android devices.

How did TikTok handle Google's restrictions on MAC address access?

• By reporting their methods to Google.

• By stopping data collection entirely.

• By openly collecting data with user consent.

• By using an added layer of encryption to conceal tracking.

What did the 2018 App Census study reveal about Android apps?

• 50% of apps were collecting MAC addresses.

• All apps were collecting MAC addresses.

• About 1% of apps were collecting MAC addresses.

• No apps were collecting MAC addresses.

For how long did TikTok collect MAC addresses in violation of Google's rules?

• 24 months

• 6 months

• 18 months

• 12 months