Detecting if crops are GMO or not is an example of a design inference. It relies on detecting artifacts of the GMO process in DNA. SETI is another example, which look for signs of intelligent life on other planets. Another example is sexual selection in evolution, where animal intelligence affects selection. Determining if rock fragments are intentionally shaped into tools or not is a design inference. I could go on, but detecting the influence of minds has never been forbidden in biology.
SETI is an interesting contrast to ID too. In striking contrast with ID, they have yet to put forward with any confidence a single positive signal. If they did find one, they would instantly work hard to rule it out (as they have in the past), and would also look for scientific evidence of the aliens. Having never cried wolf after existing for about twice as long as ID, SETI will be taken seriously if they eventually do put forward a detection event. ID, in contrast, has never retracted a single claim of detecting design, nor have they ever looked for the designer.
There is irony here too, because ID sometimes points to the WOW! signal (Wow! signal - Wikipedia) from SETI to legitimize their effort when they think they have a signal for design. Ironically, WOW! is rejected a real signal for ETI by SETI. They have never had a positive event, because they subject everything to ruthless (i.e. scientific) scrutiny and verification. Exact opposite with ID. Until they good at retracting all the bad arguments they have put forward, no one will trust them in science.