Abstract: Examples disclosed herein relate to selection of machine-readable link type. Examples include acquisition of an electronic document, selection of a machine-readable link type for evaluation, and a decision of whether at least one characteristic of the document satisfies at least one evaluation metric for use of the selected type of machine-readable link.

Abstract: Examples disclosed herein relate to acquisition of linked versions of print content having machine-readable links. Examples include acquisition of a message requesting that print content be printed at a destination printing device via the remote printing service, the message comprising link information specifying a selected type of optically machine-readable link and a digital content payoff. Examples further include acquisition, from a linking service, of a linked version of the print content comprising an optically machine-readable link that is associated with the digital content payoff via the linking service.

Abstract: Examples disclosed herein relate to acquisition of linked versions of print content having machine-readable links. Examples include acquisition of a message requesting that print content be printed at a destination printing device via the remote printing service, the message comprising link information specifying a selected type of optically machine-readable link and a digital content payoff. Examples further include acquisition, from a linking service, of a linked version of the print content comprising an optically machine-readable link that is associated with the digital content payoff via the linking service.

Abstract: In one example, an email address of a network-connected printer is stored. A print authorization code is stored. A confidential-sender email address is received and stored. After the receiving and storing of the confidential-sender email address, an email is received. The email is an email sent to the printer address, and includes a print job. Responsive to determining the email was sent from the confidential-sender address, the print job is stored. Responsive to receiving the print-authorization code, the print job is sent to the printer for printing.

Abstract: In one example, an email address of a network-connected printer is stored. A print authorization code is stored. A confidential-sender email address is received and stored. After the receiving and storing of the confidential-sender email address, an email is received. The email is an email sent to the printer address, and includes a print job. Responsive to determining the email was sent from the confidential-sender address, the print job is stored. Responsive to receiving the print-authorization code, the print job is sent to the printer for printing.