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Revenue (Tables) | 9 Months Ended
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Sep. 30, 2022
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following table sets forth our net revenues by category:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Platform revenue | $ | 1,259 |  |  | $ | 2,160 |  |  | $ | 5,379 |  |  | $ | 5,242 |
Hardware revenue | 3,499 |  |  | — |  |  | 11,642 |  |  | — |
Net revenues | $ | 4,758 |  |  | $ | 2,160 |  |  | $ | 17,021 |  |  | $ | 5,242 |
Schedules of Concentration Risk | The following table sets forth our concentration of accounts receivable, net of specific allowances for doubtful accounts.
| September 30, 2022 |  | December 31, 2021
Customer A | 24 | % |  | — | %
Customer B | 15 | % |  | — | %
Customer C | 5 | % |  | 18 | %
Customer D | — | % |  | 20 | %
The following table sets forth our concentration of revenue sources as a percentage of total net revenues:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Customer B | 1 | % |  | 35 | % |  | 1 | % |  | 15 | %
Customer E | — | % |  | 8 | % |  | — | % |  | 14 | %
Schedule of Deferred Revenue | Our deferred revenue balance consisted of the following:
| September 30, 2022 |  | December 31, 2021
Current deferred revenue |  |  |
Platform revenue | $ | 1,516 |  |  | $ | 1,824 |
Hardware revenue | 134 |  |  | 2,149 |
Total current deferred revenue | $ | 1,650 |  |  | $ | 3,973 |
Non-current deferred revenue |  |  |
Platform revenue | $ | 1,158 |  |  | $ | 1,299 |
Total non-current deferred revenue | $ | 1,158 |  |  | $ | 1,299 |
Total deferred revenue | $ | 2,808 |  |  | $ | 5,272 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 + Details
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