Section 124: Service where person summoned cannot be found

Where service in the manner provided by section 123(a) of this Act cannot by the exercise of due diligence be effected, the serving officer may, with leave of the court, affix one of the duplicates of the summons to some conspicuous part of the premises or place in which the individual to be served ordinarily resides or works, and on doing so the summons shall be deemed to have been duly served.