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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Cash flows from operating activities:    
Net loss $ (15,315) $ (20,854)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation expense 10 9
Stock-based compensation 1,032 1,243
Amortization of right-of-use assets 578 713
Issuance of shares for transaction costs 4,350
Change in fair value of warrant liabilities 4,633 (335)
Change in fair value of notes payable 220
Costs from issuance of common stock 372
Issuance of shares for borrowing related costs 1,143
Changes in operating assets and liabilities:    
Accounts receivable (159) (52)
Inventory (195) (230)
Unbilled revenue 618
Prepaid expenses 163 (377)
Other assets 55 (404)
Accounts payable 1,426 (935)
Accrued expenses (1,090) 1,359
Deferred revenue (1,351) 2,311
Lease liabilities (721) (656)
Net cash used in operating activities (9,199) (13,240)
Cash flows from financing activities:    
Proceeds from issuance of common stock 4,060 3,351
Cash received in Business Combination 660
Proceeds from notes payable 12,096
Proceeds from notes payable - related party 1,000
Payments for notes payable (7,758) (483)
Stock option exercises 177 316
Net cash provided by financing activities 9,575 3,844
Effect of exchange rate changes on cash (9) 12
Net increase (decrease) in cash 367 (9,384)
Cash, beginning of period 4,790 14,174
Cash, end of period 5,157 4,790
Supplemental cash flow information:    
Cash paid for interest 11 29
Cash paid for taxes 11 114
Noncash operating and financing activities disclosure:    
Recognition of Right-of-use assets and related lease liabilities upon lease amendment 1,771 483
Issuance of common stock for net liabilities upon Business Combination 3,034
Prepaid asset acquired, net of cancellation, for debt and accounts payable 744
Issuance of common stock to settle accounts and notes payable 3,207 150
Deferred offering costs included in accrued expenses 182
Issuance of common stock to settle deferred offering costs $ 101