  We study the average coincidence-count signal at the output of a two-mode
squeezing device with $|N\rangle\otimes|\alpha\rangle$ as the two input modes.
We show that the input photon-number can be resolved from the average
coincidence counts. In particular, we show jumps in the average
coincidence-count signal as a function of input photon-number $N$. Therefore,
we propose that such a device may be deployed as photon-number-resolving
detector at room temperature with high efficiency.
