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Segment Information and Geograhic Data - Schedule of Segment Reporting Information by Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Revenues from external customers $ 23,814 $ 17,646 $ 14,779
Income tax income / (expense) from continuing operations 3,238 (13) (9)
Other significant non cash items      
Share-based compensation expense 744 3,783 393
Gain on derivative liability (44)
Interest and amortization of debt discount and expense 168 1,057 458
Segment assets 82,858 100,787 51,358
IoT      
Segment Reporting Information [Line Items]      
Revenues from external customers 23,198 16,867 14,317
Intersegment revenues (0) 128 (0)
Interest revenue 10 1 8
Interest expense 4 30 12
Depreciation and amortization 408 470 1,501
Segment income /(loss) before income taxes 4,589 (1,302) (2,038)
Profit / (loss) from intersegment sales (0) 6 (0)
Income tax income / (expense) from continuing operations 3,251 0 0
Other significant non cash items      
Share-based compensation expense (0) (0) (0)
Gain on derivative liability 0 0 0
Interest and amortization of debt discount and expense (0) (0) (0)
Segment assets 29,145 11,377 11,031
mPKI      
Segment Reporting Information [Line Items]      
Revenues from external customers 616 779 462
Intersegment revenues 1,931 2,506 6,786
Interest revenue 5 54 59
Interest expense 572 976 707
Depreciation and amortization 104 94 91
Segment income /(loss) before income taxes (17,542) (22,032) (26,537)
Profit / (loss) from intersegment sales 92 119 323
Income tax income / (expense) from continuing operations (12) (13) (9)
Other significant non cash items      
Share-based compensation expense 744 3,783 393
Gain on derivative liability 0 0 44
Interest and amortization of debt discount and expense 168 1,057 458
Segment assets 53,713 89,410 40,327
Total Segment Assets      
Segment Reporting Information [Line Items]      
Revenues from external customers 23,814 17,646 14,779
Intersegment revenues 1,931 2,634 6,786
Interest revenue 15 55 67
Interest expense 576 1,006 718
Depreciation and amortization 512 564 1,592
Segment income /(loss) before income taxes (12,953) (23,334) (28,575)
Profit / (loss) from intersegment sales 92 125 323
Income tax income / (expense) from continuing operations 3,238 (13) (9)
Other significant non cash items      
Share-based compensation expense 744 3,783 393
Gain on derivative liability 0 0 44
Interest and amortization of debt discount and expense $ 168 $ 1,057 $ 458