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Summary of significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Summary of significant accounting policies [Abstract] |
Allowance for Doubtful Accounts | The following table summarizes the activity recorded in the valuation account for accounts receivable:
|  | Years Ended December 31, |
(In thousands) |  | 2022 |  |  | 2021 |
Balance, beginning of period |  | $ | 219 |  |  | $ | 220 |
Additions charged to costs and expenses |  |  | 140 |  |  |  | – |
Deductions |  |  | (8 | ) |  |  | (1 | )
Balance, end of period |  | $ | 351 |  |  | $ | 219 |
Disaggregation of Revenue | Disaggregation of revenue The following table disaggregates our revenue by market type, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Sales and usage-based taxes are excluded from revenues.
|  | Year Ended December 31, 2022 |
(In thousands) |  | United States |  |  | International |  |  | Total |
Food service technology |  | $ | 11,602 |  |  | $ | 762 |  |  | $ | 12,364 |
POS automation |  |  | 10,657 |  |  |  | 2 |  |  |  | 10,659 |
Casino and gaming |  |  | 17,686 |  |  |  | 12,343 |  |  |  | 30,029 |
TransAct Services Group |  |  | 4,089 |  |  |  | 998 |  |  |  | 5,087 |
Total net sales |  | $ | 44,034 |  |  | $ | 14,105 |  |  | $ | 58,139 |
|  | Year Ended December 31, 2021 |
(In thousands) |  | United States |  |  | International |  |  | Total |
Food service technology |  | $ | 11,738 |  |  | $ | 887 |  |  | $ | 12,625 |
POS automation |  |  | 4,817 |  |  |  | 8 |  |  |  | 4,825 |
Casino and gaming |  |  | 10,173 |  |  |  | 5,129 |  |  |  | 15,302 |
Printrex |  |  | 171 |  |  |  | 460 |  |  |  | 631 |
TransAct Services Group |  |  | 5,501 |  |  |  | 502 |  |  |  | 6,003 |
Total net sales |  | $ | 32,400 |  |  | $ | 6,986 |  |  | $ | 39,386 |
Net Contract Liabilities | Net contract (liabilities) assets consist of the following:
|  | December 31, |
(In thousands) |  | 2022 |  |  | 2021 |
Unbilled receivables, current |  | $ | 392 |  |  | $ | 314 |
Unbilled receivables, non-current |  |  | 163 |  |  |  | 308 |
Customer pre-payments |  |  | (101 | ) |  |  | (99 | )
Deferred revenue, current |  |  | (1,329 | ) |  |  | (805 | )
Deferred revenue, non-current |  |  | (143 | ) |  |  | (186 | )
Net contract (liabilities) assets |  | $ | (1,018 | ) |  | $ | (468 | )
Concentration of Credit Risk | Accounts receivable from customers representing 10% or more of total accounts receivable, net were as follows:
|  | December 31, |
|  | 2022 |  |  | 2021 |
Chain Link Services |  |  | – |  |  |  | 10 | %
International Gaming Technology (“IGT”) |  |  | 12 | % |  |  | 3 | %
NCR Corporation |  |  | 3 | % |  |  | 11 | %
The Bright Group |  |  | 11 | % |  |  | – |
Sales to customers representing 10% or more of total net sales were as follows:
|  | December 31, |
|  | 2022 |  |  | 2021 |
IGT |  |  | 10 | % |  |  | 9 | %

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