Which technique can be used to recover fingerprints from dust?

The technique that can be used to recover fingerprints from dust is the electrostatic dust print lifter. This method is particularly effective for collecting latent prints from non-porous surfaces that have collected dust. The electrostatic dust print lifter works by utilizing an electrostatic charge to adhere a special lifting sheet to the dust and fingerprints, allowing for a clear transfer of both the prints and the underlying dust pattern onto the sheet. This technique is advantageous because it preserves the fine details of the fingerprint without damaging the print itself, making it suitable for forensic analysis.

It's important to note that while other methods like brushing and powdering are commonly used for developing fingerprints, they are typically applied to surfaces where there are oils and sweat rather than purely on dust. Superglue fuming is effective for enhancing prints on porous surfaces but it works through a different chemical process that doesn't directly relate to dust recovery. Similarly, the application of smoothing agents is not designed for fingerprint recovery purposes.