Conditional retrieval
In one aspect of the present disclosure, a method is disclosed. The method involves: a reader detecting an eye-mountable device within a wireless communication range of the reader, wherein the eye-mountable device includes a transparent material having a concave mounting surface configured to be removably mounted on a corneal surface; wirelessly retrieving from the detected eye-mountable device a first set of data; using the retrieved first set of data to determine that a condition has been satisfied; and responsive to using the retrieved first set of data to determine that the condition has been satisfied, retrieving from the detected eye-mountable device a second set of data.
1. A method comprising:
a reader detecting a body-mountable device within a wireless communication range of the reader, wherein the body-mountable device comprises a sensor configured to obtain sensor data and a data storage configured to store the obtained sensor data;
the reader wirelessly retrieving from the detected body-mountable device a first set of data;
the reader determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session; and
responsive to determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session, the reader retrieving from the detected body-mountable device a second set of data, wherein the second set of data comprises the obtained sensor data.
2. The method of claim 1 , wherein the first set of data comprises an indication of an amount of energy stored in the body-mountable device.
3. The method of claim 1 , wherein the body-mountable device comprises a battery, and wherein the first set of data comprises an indication of an amount of energy stored in the battery.
4. The method of claim 1 , wherein the body-mountable device comprises a photovoltaic cell, and wherein the first set of data comprises an indication of an amount of energy available from the photovoltaic cell.
5. The method of claim 1 , wherein the first set of data comprises an indication of an amount of the obtained sensor data.
6. The method of claim 4 , wherein the obtained sensor data comprises data indicative of an analyte concentration.
7. The method of claim 1 , wherein the reader determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session comprises the reader determining that the body-mountable device is storing a threshold amount of energy.
8. The method of claim 1 , wherein the reader determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session comprises the reader determining that the body-mountable device is not storing a threshold amount of sensor data.
9. The method of claim 1 , wherein the reader determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session comprises the reader determining that (i) the body-mountable device is storing a threshold amount of energy, and (ii) the body-mountable device is not storing a threshold amount of sensor data.
10. A reader comprising
a wireless communication interface;
a processor; and
a computer-readable medium including instructions that, when executed by the processor, cause the reader to perform a set of functions comprising:
detecting a body-mountable device within a wireless communication range of the reader, wherein the body-mountable device comprises a sensor configured to obtain sensor data and a data storage configured to store the obtained sensor data;
wirelessly retrieving, using the wireless communication interface, from the detected body-mountable device a first set of data;
determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session; and
responsive to determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session, retrieving, using the wireless communication interface, from the detected body-mountable device a second set of data, wherein the second set of data comprises the obtained sensor data.
11. The reader of claim 10 , wherein the first set of data comprises an indication of an amount of energy stored in the body-mountable device.
12. The reader of claim 10 , wherein the first set of data comprises an indication of an amount of the obtained sensor data.
13. The reader of claim 12 , wherein the obtained sensor data comprises data indicative of an analyte concentration.
14. The reader of claim 10 , wherein determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session comprises determining that the body-mountable device is storing a threshold amount of energy.
15. The reader of claim 10 , wherein determining using the retrieved first set of data that the body-mountable device is able to transmit the obtained sensor data to the reader in a single communication session comprises determining that the body-mountable device is not storing a threshold amount of sensor data.
16. A method comprising:
a first reader detecting a body-mountable device within a wireless communication range of the first reader, wherein the body-mountable device comprises a sensor configured to obtain sensor data indicative of an analyte concentration and a data storage configured to store the obtained sensor data;
the first reader wirelessly retrieving from the detected body-mountable device a first portion of the obtained sensor data;
the first reader transmitting to a data collection device the retrieved first portion of the obtained sensor data;
a second reader detecting the body-mountable device within a wireless communication range of the second reader;
the second reader wirelessly retrieving from the detected body-mountable device a second portion of the obtained sensor data; and
the second reader transmitting to the data collection device the retrieved second portion of the obtained sensor data.
17. The method of claim 1 , wherein the reader detecting the body-mountable device comprises:
the reader transmitting a query message to the body-mountable device; and
the reader receiving an acknowledgement message from the body-mountable device.
18. The reader of claim 10 , wherein detecting the body-mountable device comprises:
the reader transmitting a query message to the body-mountable device; and
the reader receiving an acknowledgement message from the body-mountable device.
19. The method of claim 16 , wherein each of the first and second readers detects the body-mountable device by transmitting a respective query message to the body-mountable device and receiving a respective acknowledgement message from the body-mountable device.