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Does it pose a security risk to tap your smartwatch to pay for a purchase at a store? A. Only if you do not have two-factor authentication enabled on your linked phone. B. Yes, there is a risk that the signal could be intercepted and altered. C. Only if you do not have the data on your linked phone encrypted. D. No, there is no security risk associated with this.
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Answer

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Step 1:
Let's solve this step by step:

Step 2:
: Understand the context

Smartwatch payment systems use near-field communication (NFC) technology to enable contactless payments. We need to evaluate the potential security risks associated with this method.

Step 3:
: Analyze the security mechanisms

- Modern smartwatch payment systems use several security layers: - Tokenization (replacing actual card details with unique tokens) - Encryption - Transaction-specific authentication - Limited transmission range of NFC (typically 4 cm or less)

Step 4:
: Evaluate the options

A. Two-factor authentication is helpful but not the primary security measure B. This option suggests potential signal interception risks C. Phone encryption is a good practice but not directly related to payment security D. Suggests no security risks exist

Step 5:
: Determine the most accurate answer

The correct answer is B: Yes, there is a risk that the signal could be intercepted and altered. Reasoning: - NFC signals can potentially be intercepted by sophisticated attackers - While rare, signal interception and manipulation are theoretical security risks - Proximity-based attacks like "electronic pickpocketing" are possible, though difficult - The risk exists, even if modern security measures make it challenging

Final Answer

B - Yes, there is a risk that the signal could be intercepted and altered.