You do not indicate whether you are mailing or efiling. When efiling, turbo tax will process your "signature" for your and your husband electronically via PIN numbers and identify verification. If you do not have a PIN number Turbo tax will ask for your AGI from last year as another option. See the web site below for efiling.
If e-filing, then from IRS:
https://www.irs.gov/e-file-providers/signing-an-electronic-tax-returnIf mailing then when you complete preparing your returns Turbo tax will printe the necessary information to send in your return that includes signature blocks.
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