digitally sealable and/or signable, in order to be able to verify with certainty that the package being deployed is the approved one

可进行数字化签名，目的是可以验证待部署的包是通过审批的包。

youdao

The desktop printer for creating a signable copy of contracts, W-9 forms, and NDAs, and the fax machine for transmitting them.

FORBES: In parting shot, Steve Jobs kills off industry he created