The reason why counters need to take photos when buying gold bracelets is to protect the rights and interests of both parties and the security of transactions. Taking photos can be used as evidence to record the details and situations in the purchase process and prevent disputes. The following is an appropriate extension of the answer:

1. Confirm product integrity: By taking photos, the counter can record the appearance and details of the bracelet to ensure the integrity of the bracelet during the transaction. If there is any damage or defect after purchase, the responsibility and solution can be determined by comparing photos.

2. Prevent after-sales disputes: Taking photos can be used as part of the purchase contract to record important information such as the style, material and weight of the bracelet. In the after-sales service, if there is any dispute, both parties can verify the property of the goods through photos to avoid unnecessary disputes.

3. Prevent the wrist from being stolen: Some unscrupulous merchants may steal the wrist during the purchase process and replace the high-quality bracelet with inferior goods. By taking photos, consumers can check the appearance and details of the bracelet after purchase to ensure that the purchased goods are consistent with the photos.

4. Prove the time and place of purchase: Taking photos can record the specific time and place of purchasing the gold bracelet as part of the purchase voucher. This is of great significance for subsequent warranty, return and insurance claims.

Generally speaking, the purpose of taking photos at the counter is to ensure the transparency of the purchase process and the safety of the transaction, protect the rights and interests of consumers, and also provide evidence for businesses to ensure the authenticity and legality of the transaction.