The phrase "a policy device" is correct and usable in written English.
It can be used to refer to a tool or mechanism that is employed to implement or enforce a specific policy.
Example: "The government introduced a policy device aimed at reducing carbon emissions through incentives for renewable energy."
Alternatives: "a policy tool" or "a policy instrument".
China announced it will adopt in 2017 a nationwide cap trade program--a policy device that puts a price on carbon.
Set up a policy for device usage, which says what you're allowed to do with the system at work.
Without the mandate or some other policy device to keep healthy people buying coverage, most experts say insurers would have to charge everybody else even more ― and, partly as a consequence, fewer people would end up having insurance. .
The practical and inescapable lesson is that when any country is left to its own policy devices, its preferences may lead to prolonged and ultimately unsustainable imbalances.
The Affordable Care Act, aka Obamacare, is a policy Rube Goldberg device — instead of doing the simple, obvious thing, which would just be to insure everyone, it basically relies on a combination of regulations and subsidies to rope, coddle, and nudge us into a rough approximation of a single-payer system.
Uber has always had a policy prohibiting mobile device usage for anyone operating its self-driving vehicles, according to a spokesperson.
Family offices should have a written cyber-protection policy, including a connected-device policy, a password policy, social-media policy and payment-authorization policy.
Business users will also have VPN connectivity, certificates and identities, enterprise WiFi, enforced security policies, device configuration, and remote data wipes.
With two weeks to go until election day, the Obama campaign sought to mobilise support for a second term with an ancient political device: a policy manifesto.
As defined by Le Galès and Lacousmes, a policy instrument is "a device that is both technical and social, that organizes specific social relations between the state and those it is addressed to, according to the representations and meanings it carries" (Lascoumes & Le Galès, 2004, p. 5).
