  I discuss a prospect for mode identification from two-passband photometry of
forthcoming BRITE space mission. Examples of photometric diagnostic diagrams
are shown for three types of main sequence pulsating variables: $\beta$ Cephei,
Slowly Pulsating B-type and $\delta$ Scuti stars. I consider also taking into
account the radial velocity data from simultaneous spectroscopy, which can be
carried out from the ground. With such observations, much better discrimination
of the spherical harmonic degree, $\ell$, can be accomplished and more
constraints on stellar parameters and input physics can be derived.
