https://travelregistration.state.gov/ibrs/ui/
Here is an excerpt from this government website:
How can the embassy or consulate assist me while I am abroad?
U.S. consular officers assist Americans who encounter serious legal, medical, or financial difficulties. Although consular officers cannot act as your legal counsel or representative, they can provide the names of local attorneys and doctors, provide loans to destitute Americans, and provide information about dangerous conditions affecting your overseas travel or residence. Consular officers also perform non-emergency services, helping Americans with absentee voting, selective service registration, receiving federal benefits, and filing U.S. tax forms. Consular officers can notarize documents, issue passports, and register American children born abroad. Most embassies and consulates have web sites with more information.
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The fact that they could help issue a passport if mine is lost or stolen… That was enough of a reason to sign up! You can choose who they can share the info with in case of an emergency and I left my hostel information in case I need to be contacted. Yay for safety steps!

