Friend key sharing

A method, comprising:

• generating, by an electronically-secured property, a token usable by a first computing device associated with an owner to share access to the electronically-secured property;
• issuing, by the electronically-secured property, the generated token to the first computing device, wherein the first computing device is configured to transmit the token to a server computing system for storage and to transmit a corresponding indication of the storage to a second computing device, wherein the indication is not transmitted via the server computing system, wherein the second computing device is configured to:
• after receiving the transmitted indication, retrieve the token from the server computing system using a set of information indicating that the second computing device includes a secure element circuit;
• after the server computing system verifies the set of information, receive, from the server computing system, the token;
• and
• securely store the retrieved token in the secure element circuit of the second computing device;
• receiving, by the electronically-secured property, the securely stored token from the secure element circuit of the second computing device;
• and
• permitting, by the electronically-secured property, access in response to a verification of the received token.

A first computing device, comprising:

• a first secure element circuit;
• a processor;
• and
• memory having program instructions stored therein that are executable by the processor to cause the first computing device to perform operations comprising:
• securely storing, in the first secure element circuit, a token that permits access to an electronically-secured property having an owner associated with the first computing device;
• sending the token from the first secure element circuit to a server computing system for storage;
• and
• sending, to a second computing device, an indication that the server computing system stores the token, wherein the indication is not sent via the server computing system, wherein, responsive to the indication, the second computing device is configured to retrieve the token using a public key of a second secure element circuit of the second computing device and to send the retrieved token from the second secure element circuit to the electronically-secured property to obtain access to the electronically-secured property.