1. Contact information should not be just an email address. It’s better to have email, phone and any locally popular communication channels. In countries such as China, people don’t use email as often as apps like wechat. Desk clerks are less likely to register an email address to return a wallet, especially when it doesn’t have anything valuable inside.
2. The difference between money and no-money percentage may be a better indicator of civil honesty. The absolute percentage reflects more about a “I’ll wait for someone to come” or “not my business” attitude of desk clerks.
3. It is better to put something important to the owner but not everyone else in the wallet, such as a driver license or national ID card. This could reduce “not my business” factor.
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